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There are many environmental factors that arise due to the usage of water in one way or another and for every action tha..

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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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Consciousness and Behavior

Human consciousness and behavior are an interesting topic since they are determined and controlled by the brain. Conscio..

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Meiosis and Alternation of Generations

Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..

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A still body of water may be disturbed by a variety of factors. One of them is wind. In fact, it is considered as the pr..

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The Human Nervous System

The nervous system is essentially a biological information highway. This tutorial gives an overview of the nervous syste..