How we care for our common earth

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Across
  1. 3. the opposite of oxygen
  2. 5. what do trees make
  3. 7. a natural filter for CO2
  4. 8. Turning old plastic into
  5. 9. where there is no water
  6. 10. what powers our cars
  7. 11. a wave of hot temperatures
Down
  1. 1. Where we put old food
  2. 2. what we need to live
  3. 3. The planet getting hotter
  4. 4. synonym for rubbish
  5. 6. gases in the earth's atmosphere