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