Read the defitinitions and write the word.

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Across
  1. 3. things we throw away; garbage.
  2. 5. a big area of water surrounded by land.
  3. 7. a clear material used for windows and bottles.
  4. 11. to keep something safe.
  5. 12. problems. big problems that affect the whole world.
  6. 13. a hard, strong material used for cars or cans.
  7. 14. land with farms, trees, and nature; not the city.
  8. 19. to make the air, water, or land dirty.
  9. 20. when the ground shakes.
  10. 21. a big fire that burns forests or fields.
  11. 23. how hot or cold something is.
  12. 24. dirty air that looks like smoke in the city.
Down
  1. 1. garbage that people throw on the ground.
  2. 2. dirty air, water, or land.
  3. 4. things we throw away; waste.
  4. 6. a building where things are made.
  5. 8. to chop or remove trees.
  6. 9. the world around us — air, water, plants, and animals.
  7. 10. salt water that covers most of the Earth.
  8. 11. a material used to make bottles, bags, and many things.
  9. 15. to use less or stop something from being lost.
  10. 16. to make something dirty or unsafe.
  11. 17. trash; things we don’t need.
  12. 18. to break or ruin something completely.
  13. 19. to put trees in the ground so they can grow.
  14. 22. a big area with many trees.