Multiple Choice
Which human-caused change might be considered a catastrophic change rather than a gradual change?
A) compaction of the soil by continued exposure to heavy farm machinery
B) salinization of the soil though evaporation of water and deposition of salt
C) plowing of prairie soil to commence agriculture
D) human-caused changes associated with wind and water erosion
Correct Answer:

Verified
Correct Answer:
Verified
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