Across
- 2. The process of reusing materials instead of discarding them
- 5. A method of growing food using limited resources
- 7. A factor that leads to global warming
- 9. The emission of harmful gases into the atmosphere
- 12. An agreement between countries to protect the environment
- 14. A place where various plants and animals are protected
- 15. A practice that helps reduce environmental harm
- 17. A resource that can be renewed naturally
Down
- 1. A harmful chemical used in farming
- 3. Warming The gradual increase in Earth's temperature
- 4. The process of using fewer resources to reduce waste
- 6. An area that has been damaged by human activity
- 8. The practice of planting trees to replace those cut down
- 10. A type of renewable energy from the sun
- 11. The level of contamination in water, air, or soil
- 13. The natural world, including plants, animals, and resources
- 16. A system for recycling materials