OPT:
I. Calcium carbonate.
II. our nearest star.
III. global warming.
IV. sea squirts.
V. swamp vegetation.
VI. single-celled organisms.
VII. flowerless plants.
VIII. Earthworms.
Given those answer options, answer the question: Fact 1: Moss causes chemical weathering. Fact 2: Mosses Mosses are flowerless plants that grow in clumps. Given the two facts above, what can cause chemical weathering?
A:
VII.