Across
- 4. The layer of gases around the Earth
- 6. The work of growing food or raising animals on a farm
- 7. Fuels from ancient plants and animals (coal, oil, gas)
- 12. Waste materials that can be made into new products
- 14. Severe damage to something
- 15. Gases in the atmosphere that trap heat from the sun
- 17. A result or change caused by an action
- 18. The usual weather of a place over a long time
Down
- 1. Energy that will not run out and can be reused
- 2. A thick tropical forest with heavy rainfall
- 3. Harmful chemicals that make air or water dirty
- 5. The process of building houses, roads or bridges
- 8. Energy that comes from the sun
- 9. To use something again instead of throwing it away
- 10. To make the amount of waste smaller
- 11. The natural world including air, water, plants and animals
- 13. To take in gas or liquid through a surface and hold it
- 14. The melting of glaciers that causes sea levels to rise
- 16. A natural home for a plant or animal
- 19. The activity of cutting down trees for wood