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A running water environment offers numerous microhabitats for many types of animals. Similar to plants, animals in lotic..

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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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This tutorial looks at the mutation at the gene level and the harm it may bring. Learn about single nucleotide polymorph..

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