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Seed plants are vascular plants. They differ from the other vascular plants in producing seeds that germinate into a new..

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The human body is capable of regulating growth and energy balance through various feedback mechanisms. Get to know the e..

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Chromosomes X and Y and Sex Determination

This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..

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Obtaining air outside an aquatic environment required species to acquire suitable adaptations, and this was the case of ..

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Movement of Molecules Across Cell Membranes

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Freshwater Ecology

Freshwater ecology focuses on the relations of aquatic organisms to their freshwater habitats. There are two forms of co..