Multiple Choice
As air temperatures increase,evaporation increases.Warmer temperatures also increase the capacity to absorb water vapor.More water vapor in the atmosphere accelerates the greenhouse effect.As temperatures increase further,more water vapor can enter the atmosphere,causing temperatures to increase even more.This is an example of a(n)
A) positive feedback loop.
B) negative feedback loop.
C) threshold.
D) static state.
E) equilibrium state.
Correct Answer:

Verified
Correct Answer:
Verified
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