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Biology, 22.06.2019 02:00
The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important
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Biology, 22.06.2019 05:30
Hector is back from his morning run and is feeling light-headed because his energy is depleted which food item will provide him with a quick source of carbohydrates
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Biology, 22.06.2019 09:10
Hormones are chemical molecules produced by endocrine glands. one such endocrine gland is the thyroid gland, which synthesizes the thyroid hormone, which in turn affects the heart muscles. which two statements describe the probable reason for the function of the hormone? the cells in the heart have specific receptors that allow for the intake of hormones. the heart and the endocrine glands have the exact same types of cells. all cells make the same types of hormones. thyroid hormones show their effect on the heart by means of specialized cells. thyroid cells and cardiac cells have different dna.
Answers: 1
Biology, 22.06.2019 12:00
Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?
Answers: 2
Why is the cycling of elements and nutrients important...
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