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Plantlife can be studied at a variety of levels, from the molecular, genetic and biochemical level through organelles, c..

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This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..

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Hormones are produced in the endocrine glands of animals. The pituitary gland and hypothalamus are the most impor..

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Freshwater Communities & Plankton

Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..

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