Renewable energy

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Across
  1. 2. Another fossil fuel used to power a kind of stove
  2. 3. A liquid fossil fuel from the ground
  3. 5. A kind of energy that doesn't pollute the Earth
  4. 6. A black rock mined from the ground,fossilfuel
  5. 7. A machine to harness winid into electricity
  6. 9. A source of energy harnessed from waves
  7. 10. A source of energy harnessed from hydroelectric dams
Down
  1. 1. A kind of energy harnessed from burining leaves,animal corpes,dead tree, etc.
  2. 2. A source of energy harnessed from volcanos
  3. 4. A source of energy harnessed from tidals
  4. 6. A footprint to measure your carbon dioxide use
  5. 8. A machine to harness solar into electricity