Eco-quiz Crossword

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Across
  1. 3. Gas layer shielding Earth from UV light
  2. 6. A mountain or hill having a crater through which lava and gas are erupted.
  3. 7. Large area densely covered with trees and wildlife -
  4. 10. Synthetic waste material polluting oceans
  5. 12. Clean energy derived from the sun
  6. 13. The long-term average pattern of weather in a specific region.
  7. 15. Processing waste to make new goods
  8. 16. The natural home or environment of an animal or plant.
  9. 18. Gas produced during photosynthesis
Down
  1. 1. Manure made from natural garden waste
  2. 2. Dry ecosystem receiving minimal rainfall
  3. 3. Large body of saltwater covering Earth
  4. 4. Remnants of plants and animals formed over millions of years
  5. 5. Gas used by plants during photosynthesis
  6. 8. A natural flowing stream of fresh water moving toward an ocean or lake.
  7. 9. A large natural elevation of the Earth's surface rising abruptly from the surrounding level.
  8. 10. Harmful contamination of the environment
  9. 11. Essential fluid for all living organisms
  10. 14. Floating mountain of ice in cold waters
  11. 17. What is used by air turbines to make energy?