Down to Earth: A Crossword for the Planet

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Across
  1. 1. The total amount of greenhouse gases emitted by an individual or activity
  2. 3. A structure used for growing plants, or a term for gases that trap heat in the atmosphere
  3. 8. A resource that can be replenished naturally over time
  4. 10. A community of living organisms interacting with their environment
  5. 13. The variety of life in a particular habitat or ecosystem
  6. 15. A gas in the Earth's atmosphere that protects against harmful UV radiation
  7. 16. The process by which plants convert sunlight into energy.
  8. 17. Animals and plants that live in their natural environment
  9. 18. The presence of harmful substances in the environment
  10. 20. Grown or produced without synthetic chemicals or pesticides
Down
  1. 2. Capable of being broken down naturally by microorganisms
  2. 4. The removal of trees and forests, often for agriculture or urban development
  3. 5. The study of interactions between living organisms and their environment
  4. 6. The protection and preservation of natural resources
  5. 7. A sudden and violent shaking of the ground due to tectonic activity
  6. 9. Organic material that can be added to soil to help plants grow
  7. 11. The natural home or environment of an animal, plant, or organism
  8. 12. The ability to maintain ecological balance without depleting natural resources
  9. 14. Process of converting waste into reusable material
  10. 19. Reusing materials creatively to create something of higher value