Unit 6 Vocabulary Part 3

12345678910111213
Across
  1. 4. different crops together.This helps soil stay healthy and stops pests.
  2. 9. rotation:Changing what crop you grow each season.This keeps the soil healthy.
  3. 10. without digging the soil too much. It protects the soil from erosion.
  4. 11. overuse:Using too much plant food.It can hurt the soil and pollute water.
  5. 12. water to crops using pipes or canals.It helps in dry areas but can cause problems if overused.
  6. 13. plowing:Plowing along the curves of hills.This helps slow down water and stop erosion.
Down
  1. 1. down too many trees.This can cause soil erosion and less rain.
  2. 2. animals eat too much grass,leaving the soil bare and weak.
  3. 3. too much salt builds up in the soil from irrigation.It makes it hard for plants to grow.
  4. 5. steps built into hills to stop soil from washing away.
  5. 6. land becomes dry and can’t support plants.It often happens after overuse.
  6. 7. cities and roads.It covers soil with cement and stops water from soaking in.
  7. 8. Rows of trees or bushes planted to block the wind. They protect soil from blowing away.