Environment

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Across
  1. 5. a gas people and animals breathe out
  2. 6. things from nature we use (water, trees)
  3. 7. when animals or plants all die
  4. 8. to stay alive
  5. 10. fuel like oil, gas, or coal
  6. 11. changes in weather over a long time
  7. 12. the world around us (air, water, land)
Down
  1. 1. bad rain that can destroy plants and buildings
  2. 2. animals or plants that may die out soon
  3. 3. gases from cars or factories
  4. 4. a person who helps for free
  5. 9. dirty things in air, water, or land