energy

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Across
  1. 2. cheap to cut down and easy to use as fuel
  2. 4. partially decomposed organic matter
  3. 5. burned to heat water and create steam
  4. 8. can be replenished naturally and is reusable
  5. 9. easily accessible and often used in developing countries
  6. 10. world's largest oil sands reserve
Down
  1. 1. cannot be replenished naturally and exist in fixed amounts
  2. 3. what natural gas is mostly made of
  3. 6. what burning biomass releases
  4. 7. combination of clay, sand, water, and bitumen