Multiple Choice
What would be the expected effect on plants if the atmospheric CO₂ concentration was doubled?
A) All plants would have faster growth rates.
B) C3 plants would have faster growth rates; C4 plants would be minimally affected.
C) C4 plants would have faster growth rates; C3 plants would be minimally affected.
D) C3 plants would have faster growth rates; C4 plants would have slower growth rates.
Correct Answer:

Verified
Correct Answer:
Verified
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