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# The large amounts of carbon dioxide now being released into

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The large amounts of carbon dioxide now being released into [#permalink]  12 Jul 2019, 06:39
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62% (01:08) correct 37% (01:26) wrong based on 16 sessions
The large amounts of carbon dioxide now being released into the atmosphere by the burning of fossil fuels will not, in fact, result in a greenhouse effect increase in average global temperatures. Since plants use carbon dioxide in larger quantities if the supply is increased, they are able to grow larger and multiply more vigorously, and atmospheric carbon dioxide concentrations will eventually become stable.

Which of the following, if true, would most seriously weaken the conclusion that a greenhouse effect will not result from the current release of large amounts of carbon dioxide into the atmosphere?

(A) The expected rise in average global temperatures has not yet been observed.
(B) Ocean waters absorb carbon dioxide at a greater rate when the atmospheric concentration of carbon dioxide is higher.
(C) Since the beginning of the Industrial Revolution, increased atmospheric concentrations of carbon dioxide have resulted in improved agricultural productivity.
(D) When plants decay, they produce methane, another gas that can have a marked greenhouse effect.
(E) The fact that carbon dioxide levels have risen and fallen many times in the Earth's history suggests that there is some biological process that can reverse the greenhouse effect.
[Reveal] Spoiler: OA

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The large amounts of carbon dioxide now being released into   [#permalink] 12 Jul 2019, 06:39
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