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This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..

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The arthropods were assumed to be the first taxon of species to possess jointed limbs and exoskeleton, exhibit more adva..

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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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Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..

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Cell respiration is the process of creating ATP. It is "respiration" because it utilizes oxygen. Know the different stag..

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Population Growth and Survivorship

This lesson looks at population attributes, regulation, and growth. It also covers population genetics, particularly gen..