What is the relationship between plucking and abrasion on a glacially-scoured landscape?
A. Abrasion occurs relatively suddenly when a glacier first encounters the landscape, and then if it remains in place for a long time, plucking begins to happen later, over a long period of time.
B. Plucking occurs on the upflow side of a mound or hill that is scoured, while abrasion occurs on the downflow side.
C. Abrasion occurs on the upflow side of a mound or hill that is scoured, while plucking occurs on the downflow side.
D. Plucking occurs relatively suddenly when a glacier first encounters the landscape, and then if it remains in place for a long time, abrasion begins to happen later, over a long period of time.
Answer: C
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