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If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..

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It only takes one biological cell to create an organism. A single cell is able to keep itself functional through its 'mi..

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Animal Growth Hormones

Hormones are produced in the endocrine glands of animals. The pituitary gland and hypothalamus are the most impor..

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Hormone Production

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

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Respiration

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