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.

Question

Quizplus · Accepted Answer

This is a classic example of a positive feedback mechanism, where the initial change in temperature leads to further warming, creating a self-amplifying cycle.

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