unit 2 crossward

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Across
  1. 3. convert
  2. 5. thermal
  3. 7. sun
  4. 9. smaller
  5. 10. biomass
Down
  1. 1. earth heat
  2. 2. water
  3. 4. kinetic
  4. 6. oil from the ground
  5. 8. use again