natural resources

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