An energy resource that can be replaced by nature in a relatively short time is known as a(n): a. replaceable energy resource c. renewable energy resource b. inexhaustible energy resource d. non-renewable energy resource select the best answer from the choices provided a b c d

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere