Earth Day Crossword

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Across
  1. 2. A colour between blue and yellow
  2. 7. A structure that helps plants to grow in a warm, sheltered environment
  3. 9. A gas that absorbs ultraviolet radiation
  4. 10. In danger of becoming extinct
  5. 13. A type of renewable energy
  6. 15. A material that is resistant to water and chemicals
  7. 16. A sphere made of land and water
Down
  1. 1. A resource that can be used over and over
  2. 3. A place with a lot of trees and plants
  3. 4. A component of organic molecules
  4. 5. Reducing waste and pollution
  5. 6. Used for drinking, washing, and growing food
  6. 8. Organic material that is broken down to enrich soil
  7. 10. The physical and biological factors that affect the life of an organism
  8. 11. The air around the Earth which contains oxygen and other gases
  9. 12. The average weather of a region over a period of time
  10. 14. To use something again after it has been used up