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Cell respiration is the process of creating ATP. It is "respiration" because it utilizes oxygen. Know the different stag..

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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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Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a da..

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