Plants and animals cause the biological weathering of rock. what type or types of weathering does this involve?

select one:
a. chemical only
b. mechanical only
c. chemical and mechanical

The answer is (c) mechanical and chemical weathering :)

The answer to the question on what type or types of weathering does the plants and animals cause the biological weathering of rock involve is letter c. Chemical and mechanical. The chemical and mechanical really does involve with the change of rock brought by the plants and the animals.