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Life, as we know it today, is presumed to have started in the sea and many of them were likely eukaryotic animal-like or..

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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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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 elaborates on the effect of light on plant growth. It describes how different plants require different amo..

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The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..

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Sleep and Dreams – Neurology

While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities o..