environmental

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