The greenhouse effect is.. – McqOptions

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1.	The greenhouse effect is..
A.	something that has only occurred for the last 50 years.
B.	a natural phenomenon that maintains Earth's temperature range.
C.	the result of the differences in the angle of the sun's rays.
D.	an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere.
Answer» C. the result of the differences in the angle of the sun's rays.

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