PT109.S2.P3.Q21 > Analytics

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Experts anticipate that global atmospheric concentrations of carbon dioxide (CO. _██ ████ ████ ███████ ██ ███ ███ ██ ███ ████████████ ████████ ██ ██ █████ ████ ██_█ ███ ██████████ ██ ██████ ███████ ██ ████████ █████ ██████ ████ ██ █████ ██████████ ██ ████ ████ ███ ███████ ████████ ███

Intro topic · Global CO2 will probably increase

CO2 contributes to global warming.

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Perspective from some research · Increased CO2 can lead to agricultural abundance, which can decrease rate of global warming

If there are more plants, those plants might draw more CO2 from the atmosphere, which might slow down global warming.

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Critique 1 · More CO2 could lead to less agricultural yields

Although CO2 increases plant growth rate, it affects some plants more than others. Weeds might grow faster and outcompete certain good plants.

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Consequence of Critique 1 · Different growth rates in plants can damage ecosystems

Weeds burn easily. More weeds could lead to more fires.

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Critique 2 · More CO2 unlikely to slow down rate of global warming

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Support for Critique 2 · Global warming leads to more decomposing peat, which will release more CO2 into atmosphere

Although more CO2 can lead to more plant growth, which can absorb more CO2, that's counteracted by increased release of CO2 from peat.

Passage Style

Critique or debate

21.

Which one of the following, ██ █████ ██ █████ ██████████ ████ ███ ██████████ █████████ ██ ███ ██████ ████████ ██ ███ ██████ ██████████

Question Type

Application

The hypothesis is that in a high-CO2 atmosphere, plants with higher photosynthetic efficiencies will lose their advantage, and those with lower efficiencies will do better. We’re looking for an answer choice that is not consistent with this hypothesis— an example of a high-CO2 atmosphere where the more efficient plants improve and the less efficient ones worsen.

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This is consistent with the hypothesis because it shows plants with higher photosynthetic efficiencies losing their advantage in an atmosphere high in CO2.

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This is consistent with the hypothesis because it shows plants with lower photosynthetic efficiencies thriving in an atmosphere high in CO2, while agricultural crops lose their advantage.

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This is not consistent with the hypothesis because it shows plants with higher photosynthetic efficiencies growing more quickly than those with lower photosynthetic efficiencies in an atmosphere high in CO2. The hypothesis predicts the opposite.

73%

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The hypothesis doesn’t apply here, since it compares plants with higher photosynthetic efficiencies to those with lower photosynthetic efficiencies, while (D) compares plants with the same photosynthetic efficiency.

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The hypothesis doesn’t apply here, since it compares plants with higher photosynthetic efficiencies to those with lower photosynthetic efficiencies, while (E) doesn’t mention photosynthetic efficiency at all.

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PrepTest 109 - Section 2 - Passage 3 - Question 21

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PrepTest 109 - Section 2 - Passage 3 - Question 21

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