Provide your best answer for the following question. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The question is: A glacier is a slow moving river of ice. How does a glacier help create soil?
It scrapes small particles off large rocks.
A glacier grinds and carries rocks, depositing them to form moraines and till, contributing to soil formation.