The bottoms of clouds are often gray because

A) precipitation is imminent.
B) they are over dark portions of the Earth's surface.
C) the bottoms of clouds are denser than the tops, and thus absorb more light.
D) multiple scattering has removed most light before it reaches the bottom of the cloud.
E) droplets or crystals within the cloud have dispersed most of the available light.


D

Environmental & Atmospheric Sciences

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Environmental & Atmospheric Sciences