Across
- 2. An adjective of "the sun"
- 4. A country's __________ are the natural deposits it has
- 6. This term refers to gas,coal,oil,...
- 8. Prefix that goes with water
- 13. Fuel sources that won't run out
- 14. The amount of carbon that is released into the environment
- 15. Causing little or no damage to the environment
- 19. A different option
Down
- 1. We put this in our vehicles to fuel them
- 2. Toxic gases from cars which aren't good to breathe in
- 3. Biofuels are more ...-friendly than fossil fuels
- 5. Demand for ...-friendly is rising
- 7. A battery that can be reused
- 9. To totally use up
- 10. Most UK household electricity is used for this
- 11. Able to recycle
- 12. To use fuel, energy or time in large amounts.
- 16. A type of petrol with the lead taken out
- 17. The power produced from the nucleus of an antom
- 18. To produce energy