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This tutorial noted some of the physical and chemical factors that provide the framework of a running water community in..

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Plants protect themselves by releasing hydrogen peroxide to fight against fungal invasion. Another way is by secreting c..

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Genes are expressed through the process of protein synthesis. This elaborate tutorial provides an in-depth review of the..

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Principles of Hormonal Control Systems

Hormones are essential in the regulation of the activity of the various biological systems of the human body. The ineffi..

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This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..

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