What is weathering? 1)A shift in weather patterns
2)The process by which mountains are formed
3)A process that breaks down rocks into smaller pieces
4)The process by which the seasons change

The answer is A (A process that breaks down rocks into smaller pieces.)

Explanation:

Water freezes, then thaws, weakening the rocks. then, wind and MORE water (maybe,) breaks off small rocks and rock particles. It then (again, maybe,) will go to a river, and the rock will then become sediment due to compaction and cementation.

3

Explanation:

answer ( groundwater);