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Plants need to regulate water in order to stay upright and structurally stable. Find out the different evolutionary adap..

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Part of the genetic information is devoted to the synthesis of proteins. mRNA, a type of RNA, is produced as a transcri..

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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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Growth Patterns

This tutorial describes the sigmoid curve, annual plant growth, tree growth, human growth, and insect growth as the grow..

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The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..

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Lotic Communities & Algae

Lotic communities have conditions that are rather harsh for typical plants. Thus, the diversity of plant species in loti..