The Bronze Age is a historical period characterized by the use of bronze, in some areas proto-writing, other early features of urban civilization. The Bronze Age is the second principal period of the three-age Stone-Bronze-Iron system, as proposed in modern times by Christian Jürgensen Thomsen, for classifying and studying ancient societies. An ancient civilization is defined to be in the Bronze Age either by producing bronze by smelting its own copper and alloying with tin, arsenic, or other metals, or by trading for bronze from production areas elsewhere. Bronze itself is harder and more durable than other metals available at the time, allowing Bronze Age civilizations to gain a technological advantage. Copper-tin ores are rare, as reflected in the fact that there were no tin bronzes in Western Asia before trading in bronze began in the third millennium BC. Worldwide, the Bronze Age followed the Neolithic period, with the Chalcolithic serving as a transition. Although the Iron Age followed the Bronze Age, in some areas, the Iron Age intruded directly on the Neolithic.
Bronze Age cultures differed in their development of the first writing. According to archaeological evidence, cultures in Mesopotamia and Egypt developed the earliest viable writing systems; the overall period is characterized by widespread use of bronze, though the place and time of the introduction and development of bronze technology were not universally synchronous. Human-made tin bronze technology requires set production techniques. Tin must be mined and smelted separately added to molten copper to make bronze alloy; the Bronze Age was a time of developing trade networks. A 2013 report suggests that the earliest tin-alloy bronze dates to the mid-5th millennium BC in a Vinča culture site in Pločnik, although this culture is not conventionally considered part of the Bronze Age; the dating of the foil has been disputed. Western Asia and the Near East was the first region to enter the Bronze Age, which began with the rise of the Mesopotamian civilization of Sumer in the mid 4th millennium BC.
Cultures in the ancient Near East practiced intensive year-round agriculture, developed a writing system, invented the potter's wheel, created a centralized government, written law codes and nation states and empires, embarked on advanced architectural projects, introduced social stratification and civil administration and practiced organized warfare and religion. Societies in the region laid the foundations for astronomy and astrology. Dates are approximate, consult particular article for details The Ancient Near East Bronze Age can be divided as following: The Hittite Empire was established in Hattusa in northern Anatolia from the 18th century BC. In the 14th century BC, the Hittite Kingdom was at its height, encompassing central Anatolia, southwestern Syria as far as Ugarit, upper Mesopotamia. After 1180 BC, amid general turmoil in the Levant conjectured to have been associated with the sudden arrival of the Sea Peoples, the kingdom disintegrated into several independent "Neo-Hittite" city-states, some of which survived until as late as the 8th century BC.
Arzawa in Western Anatolia during the second half of the second millennium BC extended along southern Anatolia in a belt that reaches from near the Turkish Lakes Region to the Aegean coast. Arzawa was the western neighbor – sometimes a rival and sometimes a vassal – of the Middle and New Hittite Kingdoms; the Assuwa league was a confederation of states in western Anatolia, defeated by the Hittites under an earlier Tudhaliya I, around 1400 BC. Arzawa has been associated with the much more obscure Assuwa located to its north, it bordered it, may be an alternative term for it. In Ancient Egypt the Bronze Age begins in the Protodynastic period, c. 3150 BC. The archaic early Bronze Age of Egypt, known as the Early Dynastic Period of Egypt follows the unification of Lower and Upper Egypt, c. 3100 BC. It is taken to include the First and Second Dynasties, lasting from the Protodynastic Period of Egypt until about 2686 BC, or the beginning of the Old Kingdom. With the First Dynasty, the capital moved from Abydos to Memphis with a unified Egypt ruled by an Egyptian god-king.
Abydos remained the major holy land in the south. The hallmarks of ancient Egyptian civilization, such as art and many aspects of religion, took shape during the Early Dynastic period. Memphis in the Early Bronze Age was the largest city of the time; the Old Kingdom of the regional Bronze Age is the name given to the period in the 3rd millennium BC when Egypt attained its first continuous peak of civilization in complexity and achievement – the first of three "Kingdom" periods, which mark the high points of civilization in the lower Nile Valley. The First Intermediate Period of Egypt described as a "dark period" in ancient Egyptian history, spanned about 100 years after the end of the Old Kingdom from about 2181 to 2055 BC. Little monumental evidence survives from this period from the early part of it; the First Intermediate Period was a dynamic time when the rule of Egypt was divided between two competing power bases: Heracleopolis in Lower Egypt and Thebes in Upper Egypt. These two kingdoms would come into conflict, with the Theban kings conquering the north, resulting in the reunification of Egypt under a single ruler during the second part of the 11th Dynasty.
The Middle Kingdom of Egypt laste
Malaysia is a country in Southeast Asia. The federal constitutional monarchy consists of 13 states and three federal territories, separated by the South China Sea into two sized regions, Peninsular Malaysia and East Malaysia. Peninsular Malaysia shares a land and maritime border with Thailand and maritime borders with Singapore and Indonesia. East Malaysia shares land and maritime borders with Brunei and Indonesia and a maritime border with the Philippines and Vietnam. Kuala Lumpur is the national capital and largest city while Putrajaya is the seat of federal government. With a population of over 30 million, Malaysia is the world's 44th most populous country; the southernmost point of continental Eurasia, Tanjung Piai, is in Malaysia. In the tropics, Malaysia is one of 17 megadiverse countries, with large numbers of endemic species. Malaysia has its origins in the Malay kingdoms which, from the 18th century, became subject to the British Empire, along with the British Straits Settlements protectorate.
Peninsular Malaysia was unified as the Malayan Union in 1946. Malaya was restructured as the Federation of Malaya in 1948, achieved independence on 31 August 1957. Malaya united with North Borneo and Singapore on 16 September 1963 to become Malaysia. In 1965, Singapore was expelled from the federation; the country is multi-cultural, which plays a large role in its politics. About half the population is ethnically Malay, with large minorities of Malaysian Chinese, Malaysian Indians, indigenous peoples. While recognising Islam as the country's established religion, the constitution grants freedom of religion to non-Muslims; the government system is modelled on the Westminster parliamentary system and the legal system is based on common law. The head of state is the king, known as the Yang di-Pertuan Agong, he is an elected monarch chosen from the hereditary rulers of the nine Malay states every five years. The head of government is the Prime Minister; the country's official language is a standard form of the Malay language.
English remains an active second language. Since independence, Malaysian GDP has grown at an average of 6.5% per annum for 50 years. The economy has traditionally been fuelled by its natural resources, but is expanding in the sectors of science, tourism and medical tourism. Today, Malaysia has a newly industrialised market economy, ranked fourth largest in Southeast Asia and 38th largest in the world, it is a founding member of the Association of Southeast Asian Nations, the East Asia Summit and the Organisation of Islamic Cooperation, a member of Asia-Pacific Economic Cooperation, the Commonwealth of Nations, the Non-Aligned Movement. The name "Malaysia" is a combination of the word "Malay" and the Latin-Greek suffix "-sia"/-σία; the word "melayu" in Malay may derive from the Tamil words "malai" and "ur" meaning "mountain" and "city, land", respectively. "Malayadvipa" was the word used by ancient Indian traders. Whether or not it originated from these roots, the word "melayu" or "mlayu" may have been used in early Malay/Javanese to mean to accelerate or run.
This term was applied to describe the strong current of the river Melayu in Sumatra. The name was adopted by the Melayu Kingdom that existed in the seventh century on Sumatra. Before the onset of European colonisation, the Malay Peninsula was known natively as "Tanah Melayu". Under a racial classification created by a German scholar Johann Friedrich Blumenbach, the natives of maritime Southeast Asia were grouped into a single category, the Malay race. Following the expedition of French navigator Jules Dumont d'Urville to Oceania in 1826, he proposed the terms of "Malaysia", "Micronesia" and "Melanesia" to the Société de Géographie in 1831, distinguishing these Pacific cultures and island groups from the existing term "Polynesia". Dumont d'Urville described Malaysia as "an area known as the East Indies". In 1850, the English ethnologist George Samuel Windsor Earl, writing in the Journal of the Indian Archipelago and Eastern Asia, proposed naming the islands of Southeast Asia as "Melayunesia" or "Indunesia", favouring the former.
In modern terminology, "Malay" remains the name of an ethnoreligious group of Austronesian people predominantly inhabiting the Malay Peninsula and portions of the adjacent islands of Southeast Asia, including the east coast of Sumatra, the coast of Borneo, smaller islands that lie between these areas. The state that gained independence from the United Kingdom in 1957 took the name the "Federation of Malaya", chosen in preference to other potential names such as "Langkasuka", after the historic kingdom located at the upper section of the Malay Peninsula in the first millennium CE; the name "Malaysia" was adopted in 1963 when the existing states of the Federation of Malaya, plus Singapore, North Borneo and Sarawak formed a new federation. One theory posits the name was chosen so that "si" represented the inclusion of Singapore, North Borneo, Sarawak to Malaya in 1963. Politicians in the Philippines contemplated renaming their state "Malaysia" before the modern country took the name. Evidence of modern human habitation in Malaysia dates back 40,000 years.
In the Malay Peninsula, the first inhabitants are thought to be Negritos. Traders and settlers from India and China arrived as early as the first century AD, establishing trading ports and coastal towns in the second and third centuries, their presence resulted in strong Indian and Chinese influences on the local cultures, the people of the Malay Peninsula adopted the religions of Hinduism and Buddhism. Sanskrit inscriptions appear as early as the fifth century; the Kingdom of
Turkey the Republic of Turkey, is a transcontinental country located in Western Asia, with a smaller portion on the Balkan Peninsula in Southeast Europe. East Thrace, located in Europe, is separated from Anatolia by the Sea of Marmara, the Bosphorous strait and the Dardanelles. Turkey is bordered by Bulgaria to its northwest. Istanbul is the largest city. 70 to 80 per cent of the country's citizens identify as Turkish. Kurds are the largest minority. At various points in its history, the region has been inhabited by diverse civilizations including the Assyrians, Thracians, Phrygians and Armenians. Hellenization continued into the Byzantine era; the Seljuk Turks began migrating into the area in the 11th century, their victory over the Byzantines at the Battle of Manzikert in 1071 symbolizes the start and foundation of Turkey. The Seljuk Sultanate of Rûm ruled Anatolia until the Mongol invasion in 1243, when it disintegrated into small Turkish principalities. Beginning in the late 13th-century, the Ottomans started uniting these Turkish principalities.
After Mehmed II conquered Constantinople in 1453, Ottoman expansion continued under Selim I. During the reign of Suleiman the Magnificent the Ottoman Empire encompassed much of Southeast Europe, West Asia and North Africa and became a world power. In the following centuries the state entered a period of decline with a gradual loss of territories and wars. In an effort to consolidate the weakening social and political foundations of the empire, Mahmut II started a period of modernisation in the early 19th century, bringing reforms in all areas of the state including the military and bureaucracy along with the emancipation of all citizens. In 1913, a coup d'état put the country under the control of the Three Pashas. During World War I, the Ottoman government committed genocides against its Armenian and Pontic Greek subjects. Following the war, the conglomeration of territories and peoples that comprised the Ottoman Empire was partitioned into several new states; the Turkish War of Independence, initiated by Mustafa Kemal Atatürk and his colleagues against occupying Allied Powers, resulted in the abolition of monarchy in 1922 and the establishment of the Republic of Turkey in 1923, with Atatürk as its first president.
Atatürk enacted numerous reforms, many of which incorporated various aspects of Western thought and customs into the new form of Turkish government. The Kurdish–Turkish conflict, an armed conflict between the Republic of Turkey and Kurdish insurgents, has been active since 1984 in the southeast of the country. Various Kurdish groups demand separation from Turkey to create an independent Kurdistan or to have autonomy and greater political and cultural rights for Kurds in Turkey. Turkey is a charter member of the UN, an early member of NATO, the IMF and the World Bank, a founding member of the OECD, OSCE, BSEC, OIC and G-20. After becoming one of the first members of the Council of Europe in 1949, Turkey became an associate member of the EEC in 1963, joined the EU Customs Union in 1995 and started accession negotiations with the European Union in 2005 which have been stopped by the EU in 2017 due to "Turkey's path toward autocratic rule". Turkey's economy and diplomatic initiatives led to its recognition as a regional power while its location has given it geopolitical and strategic importance throughout history.
Turkey is a secular, unitary parliamentary republic which adopted a presidential system with a referendum in 2017. Turkey's current administration headed by president Recep Tayyip Erdoğan of the AKP has enacted measures to increase the influence of Islam, undermine Kemalist policies and freedom of the press; the English name of Turkey means "land of the Turks". Middle English usage of Turkye is evidenced in an early work by Chaucer called The Book of the Duchess; the phrase land of Torke is used in the 15th-century Digby Mysteries. Usages can be found in the Dunbar poems, the 16th century Manipulus Vocabulorum and Francis Bacon's Sylva Sylvarum; the modern spelling "Turkey" dates back to at least 1719. The Turkish name Türkiye was adopted in 1923 under the influence of European usage; the Anatolian peninsula, comprising most of modern Turkey, is one of the oldest permanently settled regions in the world. Various ancient Anatolian populations have lived in Anatolia, from at least the Neolithic period until the Hellenistic period.
Many of these peoples spoke the Anatolian languages, a branch of the larger Indo-European language family. In fact, given the antiquity of the Indo-European Hittite and Luwian languages, some scholars have proposed Anatolia as the hypothetical centre from which the Indo-European languages radiated; the European part of Turkey, called Eastern Thrace, has been inhabited since at least forty thousand years ago, is known to have been in the Neolithic era by about 6000 BC. Göbekli Tepe is the site of the oldest known man-made religious structure, a temple dating to circa 10,000 BC, while Çatalhöyük is a large Neolithic and Chalcolithic settlement in southern Anatolia, which existed from approximately
Syria the Syrian Arab Republic, is a country in Western Asia, bordering Lebanon to the southwest, the Mediterranean Sea to the west, Turkey to the north, Iraq to the east, Jordan to the south, Israel to the southwest. A country of fertile plains, high mountains, deserts, Syria is home to diverse ethnic and religious groups, including Syrian Arabs, Armenians, Kurds, Circassians and Turks. Religious groups include Sunnis, Alawites, Isma'ilis, Shiites, Salafis and Jews. Sunni make up the largest religious group in Syria. Syria is a unitary republic consisting of 14 governorates and is the only country that politically espouses Ba'athism, it is a member of one international organization other than the United Nations, the Non-Aligned Movement. In English, the name "Syria" was synonymous with the Levant, while the modern state encompasses the sites of several ancient kingdoms and empires, including the Eblan civilization of the 3rd millennium BC. Aleppo and the capital city Damascus are among the oldest continuously inhabited cities in the world.
In the Islamic era, Damascus was the seat of the Umayyad Caliphate and a provincial capital of the Mamluk Sultanate in Egypt. The modern Syrian state was established in mid-20th century after centuries of Ottoman and a brief period French mandate, represented the largest Arab state to emerge from the Ottoman-ruled Syrian provinces, it gained de-jure independence as a parliamentary republic on 24 October 1945, when Republic of Syria became a founding member of the United Nations, an act which ended the former French Mandate – although French troops did not leave the country until April 1946. The post-independence period was tumultuous, a large number of military coups and coup attempts shook the country in the period 1949–71. In 1958, Syria entered a brief union with Egypt called the United Arab Republic, terminated by the 1961 Syrian coup d'état; the republic was renamed into the Arab Republic of Syria in late 1961 after December 1 constitutional referendum, was unstable until the 1963 Ba'athist coup d'état, since which the Ba'ath Party has maintained its power.
Syria was under Emergency Law from 1963 to 2011 suspending most constitutional protections for citizens. Bashar al-Assad has been president since 2000 and was preceded by his father Hafez al-Assad, in office from 1971 to 2000. Since March 2011, Syria has been embroiled in an armed conflict, with a number of countries in the region and beyond involved militarily or otherwise; as a result, a number of self-proclaimed political entities have emerged on Syrian territory, including the Syrian opposition, Tahrir al-Sham and Islamic State of Iraq and the Levant. Syria is ranked last on the Global Peace Index, making it the most violent country in the world due to the war, although life continues for most of its citizens as of December 2017; the war caused more than 470,000 deaths, 7.6 million internally displaced people and over 5 million refugees, making population assessment difficult in recent years. Several sources indicate that the name Syria is derived from the 8th century BC Luwian term "Sura/i", the derivative ancient Greek name: Σύριοι, Sýrioi, or Σύροι, Sýroi, both of which derived from Aššūrāyu in northern Mesopotamia.
However, from the Seleucid Empire, this term was applied to The Levant, from this point the Greeks applied the term without distinction between the Assyrians of Mesopotamia and Arameans of the Levant. Mainstream modern academic opinion favours the argument that the Greek word is related to the cognate Ἀσσυρία, Assyria derived from the Akkadian Aššur; the Greek name appears to correspond to Phoenician ʾšr "Assur", ʾšrym "Assyrians", recorded in the 8th century BC Çineköy inscription. The area designated by the word has changed over time. Classically, Syria lies at the eastern end of the Mediterranean, between Arabia to the south and Asia Minor to the north, stretching inland to include parts of Iraq, having an uncertain border to the northeast that Pliny the Elder describes as including, from west to east, Commagene and Adiabene. By Pliny's time, this larger Syria had been divided into a number of provinces under the Roman Empire: Judaea renamed Palaestina in AD 135 in the extreme southwest.
Since 10,000 BC, Syria was one of the centers of Neolithic culture where agriculture and cattle breeding appeared for the first time in the world. The following Neolithic period is represented by rectangular houses of Mureybet culture. At the time of the pre-pottery Neolithic, people used vessels made of stone and burnt lime. Finds of obsidian tools from Anatolia are evidences of early trade relations. Cities of Hamoukar and Emar played an important role during Bronze Age. Archaeologists have demonstrated that civilization in Syria was one of the most ancient on earth preceded by only those of Mesopotamia; the earliest recorded in
Greece the Hellenic Republic, self-identified and known as Hellas, is a country located in Southern and Southeast Europe, with a population of 11 million as of 2016. Athens is largest city, followed by Thessaloniki. Greece is located at the crossroads of Europe and Africa. Situated on the southern tip of the Balkan Peninsula, it shares land borders with Albania to the northwest, North Macedonia and Bulgaria to the north, Turkey to the northeast; the Aegean Sea lies to the east of the mainland, the Ionian Sea to the west, the Cretan Sea and the Mediterranean Sea to the south. Greece has the longest coastline on the Mediterranean Basin and the 11th longest coastline in the world at 13,676 km in length, featuring a large number of islands, of which 227 are inhabited. Eighty percent of Greece is mountainous, with Mount Olympus being the highest peak at 2,918 metres; the country consists of nine geographic regions: Macedonia, Central Greece, the Peloponnese, Epirus, the Aegean Islands, Thrace and the Ionian Islands.
Greece is considered the cradle of Western civilisation, being the birthplace of democracy, Western philosophy, Western literature, political science, major scientific and mathematical principles, Western drama and notably the Olympic Games. From the eighth century BC, the Greeks were organised into various independent city-states, known as poleis, which spanned the entire Mediterranean region and the Black Sea. Philip of Macedon united most of the Greek mainland in the fourth century BC, with his son Alexander the Great conquering much of the ancient world, from the eastern Mediterranean to India. Greece was annexed by Rome in the second century BC, becoming an integral part of the Roman Empire and its successor, the Byzantine Empire, in which Greek language and culture were dominant. Rooted in the first century A. D. the Greek Orthodox Church helped shape modern Greek identity and transmitted Greek traditions to the wider Orthodox World. Falling under Ottoman dominion in the mid-15th century, the modern nation state of Greece emerged in 1830 following a war of independence.
Greece's rich historical legacy is reflected by its 18 UNESCO World Heritage Sites. The sovereign state of Greece is a unitary parliamentary republic and developed country with an advanced high-income economy, a high quality of life, a high standard of living. A founding member of the United Nations, Greece was the tenth member to join the European Communities and has been part of the Eurozone since 2001, it is a member of numerous other international institutions, including the Council of Europe, the North Atlantic Treaty Organization, the Organisation for Economic Co-operation and Development, the World Trade Organization, the Organization for Security and Co-operation in Europe, the Organisation internationale de la Francophonie. Greece's unique cultural heritage, large tourism industry, prominent shipping sector and geostrategic importance classify it as a middle power, it is the largest economy in the Balkans. The names for the nation of Greece and the Greek people differ from the names used in other languages and cultures.
The Greek name of the country is Hellas or Ellada, its official name is the Hellenic Republic. In English, the country is called Greece, which comes from Latin Graecia and means'the land of the Greeks'; the earliest evidence of the presence of human ancestors in the southern Balkans, dated to 270,000 BC, is to be found in the Petralona cave, in the Greek province of Macedonia. All three stages of the stone age are represented for example in the Franchthi Cave. Neolithic settlements in Greece, dating from the 7th millennium BC, are the oldest in Europe by several centuries, as Greece lies on the route via which farming spread from the Near East to Europe. Greece is home to the first advanced civilizations in Europe and is considered the birthplace of Western civilisation, beginning with the Cycladic civilization on the islands of the Aegean Sea at around 3200 BC, the Minoan civilization in Crete, the Mycenaean civilization on the mainland; these civilizations possessed writing, the Minoans writing in an undeciphered script known as Linear A, the Mycenaeans in Linear B, an early form of Greek.
The Mycenaeans absorbed the Minoans, but collapsed violently around 1200 BC, during a time of regional upheaval known as the Bronze Age collapse. This ushered from which written records are absent. Though the unearthed Linear B texts are too fragmentary for the reconstruction of the political landscape and can't support the existence of a larger state contemporary Hittite and Egyptian records suggest the presence of a single state under a "Great King" based in mainland Greece; the end of the Dark Ages is traditionally dated to the year of the first Olympic Games. The Iliad and the Odyssey, the foundational texts of Western literature, are believed to have been composed by Homer in the 7th or 8th centuries BC. With the end of the Dark Ages, there emerged various kingdoms and city-states across the Greek peninsula, which spread to the shores of the Black Sea, So
A camel is an even-toed ungulate in the genus Camelus that bears distinctive fatty deposits known as "humps" on its back. Camels have long been domesticated and, as livestock, they provide food and textiles; as working animals, camels—which are uniquely suited to their desert habitats—are a vital means of transport for passengers and cargo. There are three surviving species of camel; the one-humped dromedary makes up 94% of the world's camel population, the two-humped Bactrian camel makes up the remainder. The Wild Bactrian camel is now critically endangered; the word camel is derived via Latin: camelus and Greek: κάμηλος from Hebrew or Phoenician: gāmāl. Used informally, "camel" refers to any of the seven members of the family Camelidae: the dromedary, the Bactrian, the wild Bactrian, plus the llama, the alpaca, the guanaco, the vicuña; the dromedary known as the Arabian camel, inhabits the Middle East and the Horn of Africa, while the Bactrian inhabits Central Asia, including the historical region of Bactria.
The critically endangered wild Bactrian is found only in remote areas of northwest China and Mongolia. An extinct species of camel in the separate genus Camelops, known as C. hesternus, lived in western North America until humans entered the continent at the end of the Pleistocene. The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at 2.15 m at the hump. Camels can sustain speeds of up to 40 km/h. Bactrian camels dromedaries 300 to 600 kg; the widening toes on a camel's hoof provide supplemental grip for varying soil sediments. The male dromedary camel has an organ called a dulla in its throat, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females, it resembles a long, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind; the male ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
Camels do not directly store water in their humps. Concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates; when this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration: overall, there is a net decrease in water. Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water; the dromedary camel can drink as as once every 10 days under hot conditions, can lose up to 30% of its body mass due to dehydration. Unlike other mammals, camels' red blood cells are oval rather than circular in shape; this facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and increases to 40 °C by sunset, before they cool off at night again. In general, to compare between camels and the other livestock, camels lose only 1.3 liters of fluid intake every day while the other livestock lose 20 to 40 liters per day. Maintaining the brain temperature within certain limits is critical for animals. Camels sweat when ambient temperatures reach 49 °C. Any sweat that does occur evaporates at the skin level rather than at the surface of their coat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance; when the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn; the camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal; when the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body. Camels' mouths have a thick leathery lining. Long eyelashes and ear hairs, together with nostrils, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent t
The water buffalo or domestic water buffalo is a large bovid originating in the Indian subcontinent, Southeast Asia, China. Today, it is found in Europe, North America, South America and some African countries; the wild water buffalo native to Southeast Asia is considered a different species, but most represents the ancestor of the domestic water buffalo. Two extant types of domestic water buffalo are recognized based on morphological and behavioural criteria – the river buffalo of the Indian subcontinent and further west to the Balkans and Italy, the swamp buffalo, found from Assam in the west through Southeast Asia to the Yangtze valley of China in the east; the origins of the domestic water buffalo types are debated, although results of a phylogenetic study indicate that the swamp type may have originated in China and was domesticated about 4,000 years ago, while the river type may have originated in India and was domesticated about 5,000 years ago. Water buffalo were traded from the Indus Valley Civilisation to Mesopotamia, in modern Iraq, 2500 BC by the Meluhhas.
The seal of a scribe employed by an Akkadian king shows the sacrifice of water buffalo. At least 130 million domestic water buffalo exist, more people depend on them than on any other domestic animal, they are suitable for tilling rice fields, their milk is richer in fat and protein than that of dairy cattle. A large feral population became established in northern Australia in the late 19th century, there are smaller feral herds in Papua New Guinea and northeastern Argentina. Feral herds are present in New Britain, New Ireland, Irian Jaya, Guyana, Suriname and Uruguay; the skin of river buffalo is black. Swamp buffalo become slate blue later. Albinoids are present in some populations. River buffalo have comparatively longer faces, smaller girths, bigger limbs than swamp buffalo, their dorsal ridges extend further taper off more gradually. Their horns grow downward and backward curve upward in a spiral. Swamp buffalo are stockily built; the forehead is flat, the eyes prominent, the face short, the muzzle wide.
The neck is comparatively long, the withers and croup are prominent. A dorsal ridge ends abruptly just before the end of the chest, their horns grow outward, curve in a semicircle, but always remain more or less on the plane of the forehead. The tail is short, reaching only to the hocks. Height at withers is 129–133 cm for males, 120–127 cm for females, they range in weight from 300–550 kg, but weights of over 1,000 kg have been observed. Tedong bonga is a black pied buffalo featuring a unique black and white colouration, favoured by the Toraja of Sulawesi; the swamp buffalo has 48 chromosomes. The two types do not interbreed, but fertile offspring can occur. Buffalo-cattle hybrids have not been observed to occur, but the embryos of such hybrids reach maturity in laboratory experiments, albeit at lower rates than non-hybrids; the rumen of the water buffalo has important differences from that of other ruminants. It contains a larger population of bacteria the cellulolytic bacteria, lower protozoa, higher fungi zoospores.
In addition, higher rumen ammonia nitrogen and higher pH have been found as compared to those in cattle. River buffalo prefer deep water. Swamp buffalo prefer to wallow in mudholes. During wallowing, they acquire a thick coating of mud. Both are well adapted to a hot and humid climate with temperatures ranging from 0 °C in the winter to 30 °C and greater in the summer. Water availability is important in hot climates, since they need wallows, rivers, or splashing water to assist in thermoregulation; some breeds are adapted to saline sandy terrain. Water buffalo thrive on many aquatic plants. During floods, they will graze submerged, raising their heads above the water and carrying quantities of edible plants. Water buffalo eat reeds, Arundo donax, a kind of Cyperaceae, Eichhornia crassipes, Juncaceae; some of these plants are of great value to local peoples. Others, such as E. crassipes, are a major problem in some tropical valleys and water buffalo may help to keep waterways clear. Green fodders are used for intensive milk production and for fattening.
Many fodder crops are chaffed, or pulped. Fodders include alfalfa, the leaves, stems or trimmings of banana, Mangelwurzel, Leucaena leucocephala and kenaf, oats, peanut, soybean, sugarcane and turnips. Citrus pulp and pineapple wastes have been fed safely to buffalo. In Egypt, whole sun-dried dates are fed to milk buffalo up to 25% of the standard feed mixture. Swamp buffalo become reproductive at an older age than river breeds. Young males in Egypt and Pakistan are first mated at about 3.0–3.5 years of age, but in Italy they may be used as early as 2 years of age. Successful mating behaviour may continue until the animal is 12 years or older. A good river male can impregnate 100 females in a year. A strong seasonal influence on mating occurs. Heat stress reduces libido. Although buffalo are polyoestrous, their reproductive efficiency shows wide variation throughout the year. Buffalo cows exhibit a distinct seasonal change in displaying oestrus, conception rate, calving rate; the age at first oestrus of heifers varies between breeds from 13–33 months, but mating at the first oestrus is infertile and deferred unti