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Life
Life
Animal corpses, like this African buffalo, are recycled by the ecosystem, providing energy and nutrients for living organisms.
Animal corpses, like this African buffalo, are recycled by the ecosystem, providing energy and nutrients for living organisms.
Adenoviruses as seen under an electron microscope
Adenoviruses as seen under an electron microscope
Cyanobacteria dramatically changed the composition of life forms on Earth by leading to the near-extinction of oxygen-intolerant organisms.
Cyanobacteria dramatically changed the composition of life forms on Earth by leading to the near-extinction of oxygen-intolerant organisms.
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This is a diagram depicting a large set of human metabolic pathways.[image reference needed]
This is a diagram depicting a large set of human metabolic pathways.[image reference needed]
Plant cells (bounded by purple walls) filled with chloroplasts (green), which are the site of photosynthesis
Plant cells (bounded by purple walls) filled with chloroplasts (green), which are the site of photosynthesis
Santorio Santorio in his steelyard balance, from Ars de statica medicina, first published 1614
Santorio Santorio in his steelyard balance, from Ars de statica medicina, first published 1614