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Warming Temperatures Melt Ice Cover,exposing a Darker Surface That Absorbs

Question 75

Multiple Choice

Warming temperatures melt ice cover,exposing a darker surface that absorbs more solar radiation.In response,the air warms even further.This is an example of:


A) a stable-feedback mechanism.
B) a negative feedback mechanism.
C) a positive feedback mechanism.
D) a variable-feedback mechanism.

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