Question

photo by mahlum
in the photo above, lichen and fungi are slowly causing these rocks to break down. they are doing this by slowly changing the material the rocks are made of. which of the following processes is taking place?
a. chemical weathering
b. erosion by wind
c. erosion by ice
d. physical weathering
please select the best answer from the choices provided

Explanation:

Lichen and fungi change rock - material chemically. Chemical weathering alters rock's chemical composition.

Answer:

A. chemical weathering