Energy

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Across
  1. 4. energy energy sources that cannot be used over again
  2. 6. creates greenhouse gases when burned
  3. 7. efficient using less energy
  4. 8. Structure that holds back water
Down
  1. 1. Dams can cause damage to ecosystem
  2. 2. Available in remote areas of world
  3. 3. energy energy sources that can be used over again
  4. 5. free resource that produces no greenhouse gases