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Air with Varying Amounts of CO2,within the Ranges Found in Nature,is

Question 12

Multiple Choice

Air with varying amounts of CO2,within the ranges found in nature,is forced across leaf surfaces and into sub-stomatal cavities; this produces stomatal closure.


A) Supports both Hypothesis I and II.
B) Supports only Hypothesis I.
C) Supports only Hypothesis II.
D) Supports neither hypothesis.

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