Crossword puzzle for environmental science

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Across
  1. 3. Gases released into the air by burning fossil fuels.
  2. 5. Energy harnessed from the Sun.
  3. 6. Capable of being broken down by bacteria or other organisms.
  4. 15. Effect trapping heat in Earth's atmosphere.
  5. 17. Clearing of forests for non-forest uses.
  6. 19. Envelope of gases surrounding Earth.
  7. 21. Long-term patterns of weather in a region.
  8. 24. The process of soil or rock being worn away.
  9. 25. Contamination of air, water, or soil.
  10. 27. Upper layer of earth where plants grow.
  11. 29. Layer in the atmosphere that protects from UV radiation.
  12. 30. Branch of biology that studies organisms and their environment.
Down
  1. 1. The process where oceans become more acidic.
  2. 2. Practice of using resources without depleting them.
  3. 4. Protecting natural resources and ecosystems.
  4. 7. Relating to the environment and its interactions.
  5. 8. Type of energy that can be replenished.
  6. 9. Converting waste into reusable material.
  7. 10. Land saturated with water, often home to unique ecosystems.
  8. 11. Tiny plastic particles harmful to aquatic life.
  9. 12. Species at risk of extinction.
  10. 13. The variety of life found in an area.
  11. 14. Breaking down organic material for soil enrichment.
  12. 16. Natural environment where a species lives.
  13. 18. Element crucial to controlling climate change.
  14. 20. Vital liquid resource for all living things.
  15. 22. A community of living organisms interacting with their environment.
  16. 23. The ability to do work; often comes in renewable forms.
  17. 26. Undomesticated animals in their natural environment.
  18. 28. Non-renewable energy source from ancient remains.