Across
- 3. the disposal of waste material by burying it
- 6. the process of replanting an area with trees
- 8. damage caused to water, air, etc., by harmful substances or waste
- 9. something that breaks down or decays naturally
- 10. a form of energy that provides power to motors and devices that create light or heat
Down
- 1. a celestial body moving in an elliptical orbit around a star; e.g. the Earth
- 2. the air, water, and land in or on which people, animals, and plants live
- 4. the planet in which we live
- 5. lessen; make something smaller or less in amount, degree, or size
- 7. to keep and protect from waste, loss, or damage