Environment

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Across
  1. 4. Maintaining equilibrium in nature.
  2. 5. The removal of trees and forests.
  3. 9. Protecting natural habitats and species.
  4. 12. Our surroundings and the world we live in.
  5. 13. Long-term shifts in temperature and weather patterns.
  6. 15. Related to the interaction of organisms and their environment.
  7. 18. Protection of animals and plants in their natural habitat.
  8. 19. The condition or state of being pure or unadulterated.
  9. 20. Harmful substances released into the environment.
Down
  1. 1. Harmful substances in the air or water.
  2. 2. Element found in all living things and fossil fuels.
  3. 3. Materials or substances used by humans.
  4. 6. Meeting the needs of the present without compromising the future.
  5. 7. The layer of gases surrounding our planet.
  6. 8. A community of living organisms and their environment.
  7. 10. Energy sources that can be naturally replenished.
  8. 11. Traps heat in the Earth's atmosphere.
  9. 14. Variety of plant and animal life in a particular habitat.
  10. 16. Protects us from harmful UV rays.
  11. 17. The effect or influence of one thing on another.