Free-enterprise economy
A, B, and C will hurt an underdeveloped nation. D would help the nation strive into becoming an first would country. The question is asking what will not hurt an underdeveloped nation.
Answer:
Ultraviolet radiation and Infrared light
Explanation:
There is a low energy of the ultraviolet spectrum that reaches the surface of the Earth and is the one that causes sunburns and make it necessary to wear sunglasses. Also, infrared radiation enters the troposophere and is the one that warms the Earth surface.
Physical weathering brakes it down while keeping the same substance.
Explanation:
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The two integers you are looking for are 7 and 8 or -7 and -8. if you multiply either of those two together you get 56 and they are consecutive integers.
