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

Molecules move within the cell or from one cell to another through different strategies. Transport may be in the form of..

Human consciousness and behavior are an interesting topic since they are determined and controlled by the brain. Conscio..

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

This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..

Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..

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