The correct answers of the given question above would be <span>glacial activity and tectonic plate movement of the earth's crust. The two physical processes that shaped many land forms in the United States are glacial activity and tectonic plate movement of the Earth's crust. Hope this answer helps. </span>
Hmm, maybe too look over each others answers over a project they both did. Also, maybe to check over there answers and compare the differences of there answers. They also may work out the answers that they had that were differently to try and reach the correct answers to make each others hypothesis more understanding or correct. I hope this will help! :)
Answer:
an increase in the amount of rainfall
