Food chain
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A food chain is a linear network of links in a food web, often beginning with an autotroph, also called a producer, and typically ending at an apex predator, detritivore, or decomposer. A food web is
This food web of waterbirds from Chesapeake Bay is a network of food chains
The sea otter is a prime example of a keystone species
Apex predator
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An apex predator, also known as a top predator or superpredator, is a predator at the top of a food chain with few natural predators of their own, if any.
Food chain
…linear network of links in a food web, often beginning with an autotroph (such as grass or algae), also called a producer, and typically ending at an apex predator (such as grizzly bears or killer whales), detritivore (such as earthworms and woodlice), or decomposer (such as fungi or bacteria). A food web is…
The lion is the world's second-largest big cat. Healthy adults are apex terrestrial predators in Africa.
The saltwater crocodile is the largest living reptile and the dominant predator throughout its range.
The Megalodon, the largest shark to have ever existed, had a major impact on global marine ecosystems.
The wolf is both an apex predator and a keystone species, affecting its prey's behaviour and the wider ecosystem.