Science Vocabulary Unit 6 Part 3

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Across
  1. 4. Rows of trees or tall plants planted in lines to block the wind.
  2. 5. Bringing water to crops using pipes, sprinklers, or canals, especially in dry areas.
  3. 8. Changing the type of crop planted in a field each season or year.
  4. 9. Planting two or more different crops close together in the same field.
  5. 10. The growth of cities with buildings, streets, and parking lots.
  6. 12. Adding too much fertilizer to crops.
  7. 13. A farming method where farmers plow following the natural curves of the land.
Down
  1. 1. The cutting down of too many trees in a forest.
  2. 2. When too many animals eat grass in the same place for too long.
  3. 3. When salt builds up in the soil, usually because of too much irrigation or poor drainage.
  4. 6. Wide, flat steps cut into hillsides where crops can be planted.
  5. 7. A way of farming where the soil is not dug or turned over too much.
  6. 11. When once-healthy land becomes dry, cracked, and unable to grow plants.