Explanation:
Erosion by Ice Ice, usually in the form of glaciers, can erode the earth and create dramatic landforms. In frigid areas and on some mountaintops, glaciers move slowly downhill and across the land. As they move, they transport everything in their path, from tiny grains of sand to huge boulders.
Phenotype. Genotype is expressed by numbers. Phenotype expresses the physical components.
I believe it is the crust
The answer to the question is A
