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

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

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

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The hominid family diversified from the apes around 6 to 8 million years ago. Since then, the evolutionary path has prov..

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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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Vascular Plants: Ferns and Relatives

Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..