Across
- 2. resources:a natural that can be replaced
- 3. energy : Heat, steams, and hot water
- 5. major ecological community such as grasslands
- 8. :all nonliving parts of an ecosystem
- 9. living things exist
- 10. act of preserving natural resources
- 12. energy :Electricity generated by turbines rotating
- 15. energy:electricity generated by moving water flowing over a turbine
- 16. density :a concept that allow demographers to understand overall trends
- 17. resources:energy released when the nucleus of an atom is split apart
Down
- 1. or resources that is able to meet the demands
- 4. energy: energy that comes from the sun
- 6. energy :a nontraditional source of energy that is not from fossil fuels
- 7. of species that exist in an environment
- 9. living parts of an ecosystem
- 11. fuels :come from the decay of organisms buried in sediments that are pressed tightly together for millions of years
- 13. resources:a natural resource of a finite amount exits or cannot be replaced
- 14. energy :resources that are obtained from the sun