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

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New Zealand is known for its unique biodiversity, caused by its remarkable geography and geologic history. Breaking away..

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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..

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A balanced diet is essential to a healthy organism. Insufficiency or too much of a particular element or compound, such ..

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Fish

The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..

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This study guide tackles plant roots in greater detail. It delves into the development of plant roots, the root structur..