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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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The diversification of several new species from a recent ancestral source, each adapted to utilize or occupy a vacant ad..

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Plants are responsible for incredible feats of molecular transformation. Plant processes, such as photosynthesis, photop..

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The circulatory system is key to the transport of vital biomolecules and nutrients throughout the body. Learn about the ..