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what is soil erosion |
Both human and natural activities affect soil. Cutting down trees and pulling out grasses makes the soil loose and infertile. Sometimes, rainwater and strong winds carry the loose soil away. This is called soil erosion. It must be prevented. The following steps must be taken to prevent soil erosion and conserve the soil: Do not cut trees. Plant more trees, especially along hill slopes. Do not keep the fields barren. |