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Certain species are capable of expressing characteristics indicative of the state of the ecosystem they occupy. They are..

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Hormones are chemical messengers produced by specialized glands and they were produced by switching on the genes designe..

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Seed plants are vascular plants. They differ from the other vascular plants in producing seeds that germinate into a new..

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Genetics and Evolution

Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..

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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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A running water environment offers numerous microhabitats for many types of animals. Similar to plants, animals in lotic..