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For human species to obviate extinction, reproductive mature adults should be producing viable offspring in order to con..

Plant Water Regulation
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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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Muscle cells are specialized to generate force and movement. Learn about the different types of muscle tissues in this t..

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Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..

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Proteins have a crucial role in various biological activities. Get to know how proteins are able to perform as enzymes, ..

Still Water Animals
Still Water Animals

Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches a..