DISCUSSION: The first paragraph made two predictions: more agriculture (line 9) and slower CO2 growth (lines 13-15). The second paragraph attacks the first prediction, and the third paragraph attacks the second prediction.
___________
- The opinion from the first paragraph does depend on the evidence in this answer choice. More CO2 absorption would slow global warming.
- CORRECT. See lines 54-56. The melting tundra wipes out any gains from slower plant growth.
- This isn’t even true. Lines 56-60 say high latitudes will have the most warming.
- This might be true, but it doesn’t say whether more CO2 will be released. So it doesn’t weaken the prediction that plants will lower the rate of CO2 growth.
- This is the argument made in paragraph one. They certainly considered this.
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