Natural Resources
Across
- 3. resources that are unable to be replenished within a short period of time
- 6. burning of crops, wood, or other material to produce heating in buildings
- 8. exists as a liquid underground formed from plants and animals over millions of years
- 9. radiation received from the sun
- 12. gas fossil fuel containing methane, natural gas liquids,and hydrocarbon gases
Down
- 1. resources that are replaced by nature at the same (or faster) rate than they are used by humans
- 2. heat from within the earth
- 4. caused by an uneven heating of earths surface
- 5. fuels created from biomass materials
- 7. using the force of flowing water to produce electricity
- 10. energy is released from the nuclei of atoms when they are split apart in nuclear fission
- 11. combustible rock with high carbon/hydrocarbon levels