If the same amount of force were applied to all four balls in the picture, which would have the smallest change in its motion? A)
5kg
B)
10kg
20kg
D)
40kg

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