Question 25 (1 point)

Question

Certain types of lichen grow on rocks. These lichen secrete a form of acid that breaks bonds and weakens the rock over time. This is an example of:

Lichen Crust on Desert Rocks - DesertUSA

a
Salt Wedging
b
Abrasion
c
Chemical Weathering
d
Physical Weathering

Answer 1

The correct answer is:

c. Chemical Weathering

Lichens secrete acids that chemically alter the minerals in the rocks, which is characteristic of chemical weathering.