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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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Neural Control Mechanisms

Neurons generate electric signals that they pass along to the other neurons or target tissues. In this tutorial, you wil..

Gene Regulation in Eukaryotes
Gene Regulation in Eukaryotes

This tutorial is about genetic regulation in eukaryotes. Learn about the general structure of a eukaryotic gene, the tra..

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Effect of Chemicals on Growth & Development in Organisms

Plants and animals need elements, such as nitrogen, phosphorus, potassium, and magnesium for proper growth and developme..

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Kidneys and Regulation of Water and Inorganic Ions

The kidneys are responsible for the regulation of water and inorganic ions. Read this tutorial to learn about the differ..

Hormone Production
Hormone Production

Hormones are chemical messengers produced by specialized glands and they were produced by switching on the genes designe..