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There are many environmental factors that arise due to the usage of water in one way or another and for every action tha..

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Stems primarily provide plants structural support. This tutorial includes lectures on the external form of a woody twig ..

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

The Human Physiology
The Human Physiology

Physiology is the study of how living organisms function. Thus, human physiology deals specifically with the physiologic..