Across
- 3. one of the 3 r's
- 4. forest land to non-forest use
- 6. poison in the atmosphere
- 12. ecosystem dominated by soft-stemmed vegetation
Down
- 1. council that fights deforestation
- 2. international agreement
- 5. water in permable rock layers
- 7. ecosystem dominated with trees
- 8. removal of layer of topsoil
- 9. effect warming of atmosphere
- 10. change of climate
- 11. dirty air