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The body is comprised of different elements with hydrogen, oxygen, carbon, and nitrogen as the major four. This tutorial..

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Human intelligence provided the means to utilize abstract ideas and implement reasoning. This tutorial takes a further l..

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Plants in lentic habitats have features not found in terrestrial plants. They acquired these features as they adapt to t..

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Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..