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The evolution of the species of the genus "Homo" led to the emergence of modern humans. Find out more about human evolut..

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ATP is the energy source that is typically used by an organism in its daily activities. The name is based on its structu..

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This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..

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Freshwater ecosystem is comprised of four major constituents, namely elements and compounds, plants, consumers, and deco..