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The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..

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The human body is capable of regulating growth and energy balance through various feedback mechanisms. Get to know the e..

Genetics and Evolution
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Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..

Sugar Homeostasis
Sugar Homeostasis

The blood sugar level is regulated by two hormones. The mechanism behind this type of negative feedback control is descr..

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Sigmund Freud and Carl Gustav Jung

In this tutorial, the works of Carl Gustav Jung and Sigmund Freud are described. Both of them actively pursued the way h..

Evolution of Life - Ancient Earth
Evolution of Life – Ancient Earth

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