Question

question 17 slide 16 what is not a physical weathering force? plants animals freezing water acid rain

Explanation:

Physical weathering involves mechanical processes. Plants and animals can cause physical weathering through root - growth and burrowing. Freezing water expands and exerts pressure, a physical process. Acid rain is a chemical weathering agent as it involves chemical reactions between acidic substances and rocks.

Answer:

D. acid rain