Across
- 4. One of the top 3 countries consumption of energy in 2018
- 6. Type of energy used most in Ecuador
- 9. The most abundant fossil fuel
- 11. Effect on the environment caused by mining
- 13. Energy that can not be replenished
- 14. Type of nuclear energy
- 15. A secondary energy source
Down
- 1. A primary energy source
- 2. Energy in a transformed state
- 3. Energy forms that can be used directly from nature
- 5. Energy that can be replenished
- 7. A type of nonrenewable energy source
- 8. A type of energy used in the United States
- 10. A type of nondepletable energy source
- 12. The ability to do work