Across
- 2. protection of natural resources
- 4. a biological community
- 6. the presence of harmful substances
- 7. converting waste into reusable material
- 8. the removal of forests
- 9. a particular habitat
- 10. An element in fossil fuel
- 11. the ability to be maintained
Down
- 1. the process by which plants synthesize food
- 3. the long term pattern of weather
- 5. A gas in earth’s stratosphere
- 7. resources that are naturally replenished over short periods