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Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..

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This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..

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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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Population Growth and Survivorship

This lesson looks at population attributes, regulation, and growth. It also covers population genetics, particularly gen..