Ehleringer and Clark Found That Variation in Leaf Pubescence Among

question 20

Multiple Choice

Ehleringer and Clark found that variation in leaf pubescence among plants of the genus Encelia appears to correspond to the distribution of these species along a ________ gradient from the California coast eastward.

• A) light intensity
• B) moisture
• C) temperature
• D) both light intensity and moisture
• E) both moisture and temperature

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