Across
- 4. It uses energy from breaking atoms.
- 6. It uses energy from organic matter (有机的) matter (物质).
- 8. It looks like a rock and it is black.
- 9. It uses energy from the Sun.
- 12. Humans can always use this resource because nature can replace it very fast.
- 13. It uses energy from wind.
Down
- 1. It uses energy from water.
- 2. Humans use this resource faster than nature can replace it.
- 3. It uses heat (热量) from inside the Earth.
- 5. Humans use these things such as water, petroleum.
- 7. It is a nonrenewable resource formed from the remains of dead plants and animals millions of years ago.
- 10. It is a gas and we use it for cooking.
- 11. It is a black liquid.