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