Across
- 2. fuel a nonrenewable energy resource that forms from the remains of organisms
- 4. energy the energy released when the nuclei of atoms are split or combined
- 7. what does coal generate
Down
- 1. what type of resource is coal
- 3. resource a natural resources that humans use to generate energy and can be renewable or nonrenewable
- 5. remains what is coal formed from
- 6. oil another name for petroleum