Across
- 1. - Can be replaced in our lifetime
- 5. - Substances harmful to the environment
- 8. - The part of Earth where life exists
- 11. - A community where all living things interact with non-living things
- 12. - All forms of water on Earth
- 13. - Meeting todays and future generations needs
- 15. - Earths internal heat source
- 16. fuels - Oil, coal and natural gas
- 17. - Power derived from water
Down
- 2. - The rigid outer layer of the Earth
- 3. - From the sun
- 4. - The gases around the Earth
- 6. - energy from the centre of an atom
- 7. - Building blocks that make up rocks
- 9. - Power
- 10. - Materials available in our environment
- 14. - The variety of animal and plant life in any environment