Energy

123456789
Across
  1. 3. most abundant fossil fuel
  2. 4. moving water as source of energy
  3. 6. gaseous compund made from organic matter
  4. 7. from one form to another
  5. 9. cannot be replenished right away
Down
  1. 1. crust's heat as source of energy
  2. 2. degrades organic matter
  3. 5. sustainable, can be replenish
  4. 6. electrochemical
  5. 8. ability to do work