Q: Fact 1: Moss causes chemical weathering. Fact 2: Chemical weathering causes chemical changes in the minerals of a rock. Given the two facts above, what causes chemical changes in the minerals of a rock?

Choose your answer from: A). moss. B). hitting it with a hammer. C). steady temperature. D). bad music. E). copper. F). iron. G). sodium. H). coal.
The answer is:
A).