Field experiments studying the effects of increased CO 2 on forest growth have shown_______.

Increased CO2 can enhance forest growth, but this effect is often contingent on the availability of other essential resources like nitrogen and water. Without these, the growth benefits of elevated CO2 may not be realized.

Field experiments studying the effects of increased CO 2 on forest growth have shown_______.

Increased CO2 can enhance forest growth, but this effect is often contingent on the availability of other essential resources like nitrogen and water. Without these, the growth benefits of elevated CO2 may not be realized.

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Field Experiments Studying the Effects of Increased CO₂on Forest

Question 149

Multiple Choice

Field experiments studying the effects of increased CO₂on forest growth have shown_______.

A) increased net primary productivity under all circumstances
B) increased net primary productivity only when phosphorus and iron are abundant
C) increased net primary productivity only when nitrogen and water are abundant
D) there is no real effect on net primary productivity
E) decreased net primary productivity

Correct Answer: