Biology, 18.12.2020 07:00 arturomarquezjox3wxn
Which statement describes an important role of carbon dioxide in Eartly's atmosphere?
Animals breathe carbon dioxide
Plants use carbon dioxide to make food,
Carbon dioxide helps animals make proteins
Carbon dioxide forma clouds that produce rain
Answers: 2
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Coquina, a type of limestone, forms from shell fragments that settle on the ocean floor. what type of rock is coquina?
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Are the earth's ocean floor and continents the same age geologically? why or why not?
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Which characteristics are typical of a human population in the postindustrial stage?
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Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.
Answers: 1
Which statement describes an important role of carbon dioxide in Eartly's atmosphere?
Animals breat...
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