Across
- 6. When you use things your ... goes up.
- 9. Renewable energy that makes the propellers of turbines spin.
- 10. Fossil fuel used to produce gasoline.
- 11. Energy that comes from the sun.
- 12. Can be burned to produce electricity.
- 14. Things we need to survive.
- 16. Energy that uses the power of water.
- 17. Layer of gas around the earth that protects you from UV rays.
Down
- 1. Another ingredient to form fossil fuels
- 2. The sum of all ecosystems.
- 3. Methane is a natural ... found underground.
- 4. When there are lots of consumers and little resources it creates ...
- 5. A way to extract minerals.
- 7. The current world ... is over 8 billion.
- 8. Ingredient needed to form oil.
- 13. Resources that don't run out.
- 15. Making resources last as long as possible.