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If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..

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This tutorial elaborates on how the nervous system works, particularly at the tissue level of the brain. There are three..

"Cronopio dentiacutus", a prehistoric mammal (an illustration)
Mammalian Ancestors

Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. Ov..

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Control of Body Movement

Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..

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The Hominids

The hominid family diversified from the apes around 6 to 8 million years ago. Since then, the evolutionary path has prov..