Unit 6 Vocabulary Part 3

4. Bringing water to crops using pipes or canals. It helps in dry areas but can cause problems if overused.
8. When land becomes dry and can’t support plants. It often happens after overuse.
11. Cutting down too many trees. This can cause soil erosion and less rain.
12. Plowing along the curves of hills. This helps slow down water and stop erosion.
13. When animals eat too much grass, leaving the soil bare and weak.
14. Changing what crop you grow each season. This keeps the soil healthy.

1. Building cities and roads. It covers soil with cement and stops water from soaking in.
2. When too much salt builds up in the soil from irrigation. It makes it hard for plants to grow.
3. Growing different crops together. This helps soil stay healthy and stops pests.
5. Rows of trees or bushes planted to block the wind. They protect soil from blowing away.
6. Flat steps built into hills to stop soil from washing away.
7. Using too much plant food. It can hurt the soil and pollute water.
9. Rows of trees or bushes planted to block the wind. They protect soil from blowing away.
10. Farming without digging the soil too much. It protects the soil from erosion.