Question

1. choose the best answer.

— occurs when a rock is changed into a new substance.
physical weathering
chemical weathering
deposition
erosion

Explanation:

Chemical weathering involves a chemical change where a rock is transformed into a new substance. Physical weathering is a physical break - down without a new substance formation. Erosion is the movement of sediments, and deposition is the laying down of sediments.

Answer:

Chemical weathering