"Save the World"

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Across
  1. 2. 70% of the Earth is covered by this
  2. 3. Living things in nature
  3. 5. Plants and trees make ____
  4. 8. Change waste into reusable material
  5. 11. Put your ____ in the bin
  6. 12. Fossil fuels release ____ dioxide
  7. 14. Use something again or more than once
  8. 15. The opposite of clean
Down
  1. 1. Everything around us
  2. 4. Dangerous things in the air, water and on land
  3. 6. The power we use in our homes
  4. 7. To use in a careless way
  5. 9. We should walk or ____ more
  6. 10. A place with many trees
  7. 13. We can get ____ power from the Sun