Across
- 3. energy rich substances made from the preserved remains of organisms.
- 6. Precipitation that has a lower pH than normal (more acidic)
- 7. A natural resource that is NOT replaced in a useful time frame.
- 8. Nuclear fission is the process of splitting of a large atom into two or more smaller atoms creating energy
- 10. anything occurring naturally in the environment.
Down
- 1. The prevention of wasteful use of energy, especially in order to ensure its continuing availability
- 2. Petroleum
- 4. Meeting the needs of the present without compromising the ability of future generations to meet theirs
- 5. A resource that is either always available or is naturally replaced in a relatively short time.
- 9. to replenish