The process by which lichen secretes acid that breaks down and weakens rock is an example of c. Chemical Weathering. This is because the acids change the chemical composition of the rock material, leading to its breakdown.
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
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