_Albedo is defined as ________$?

1.	_Albedo is defined as ________$?
A.	UV radiations sent out by the SUN
B.	A substance contained in the upper atmospheric layers of the earth, which is responsible for the reflection of/a part of solar radiations
C.	Celestial bodies in earth's atmosphere which add to the greenhouse effect
D.	The amount of insolation reflected back to the space by the top of atmosphere, by clouds and ice-covered areas of the Earth's surface
Answer» E.

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_Albedo is defined as ________$?

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