It is the 3rd Law. Every force in nature occurs in equal measure but opposite directions
Answer:
Mass of the larger object
<span>The answer is D. mountains have been eroding for millions of years. The Appalachian Mountains is an older group of fold mountains. It is much older than the Himalays that do not exibit this rounded shape. As tectonic forces enable mountain building, forces of weathering, erosion and mass wasting are constantly eating away at them. </span>
Mass and Volume would be the answer
Fossil Fuels is the largest source for energy
Hope this is what you were asking :)