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Autotrophs flourished, absorbing carbon and light. Soon after, primitive life forms that could assimilate oxygen thrived..

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Neurons generate electric signals that they pass along to the other neurons or target tissues. In this tutorial, you wil..

Types and Causes of Brain Damage
Types and Causes of Brain Damage

This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..

Developmental Biology
Developmental Biology

Developmental biology is a biological science that is primarily concerned with how a living thing grows and attains matu..

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A balanced diet is essential to a healthy organism. Insufficiency or too much of a particular element or compound, such ..

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Obtaining air outside an aquatic environment required species to acquire suitable adaptations, and this was the case of ..