Additional clouds in a warmer world ____.
A) would have a net warming effect
B) would have a net cooling effect
C) would have no warming or cooling effect
D) could enhance or reduce warming

Question

Quizplus · Accepted Answer

Additional clouds in a warmer world could enhance or reduce warming depending on various factors such as thickness, altitude, and composition of clouds. Low clouds tend to have a cooling effect by reflecting sunlight back into space whereas high clouds tend to have a warming effect by trapping heat radiating from the Earth's surface. Therefore, the net effect of additional clouds in a warmer world cannot be predicted with certainty and requires further study.

Additional Clouds in a Warmer World ____