Across
- 2. protecting and preserving natural resources and the environment
- 3. the rate at which work is done
- 6. the ability to do work
- 7. release of harmful materials into the environment
- 8. existing in or caused by nature; not made or caused by humankind
- 9. changing from one form to another
- 10. a natural resource that cannot be replaced
Down
- 1. a natural resource that can be replaced at the same rate at which the resource is consumed
- 4. a substance in the environment that is useful to people
- 5. the average weather conditions in an area over a long period of time
- 6. the surroundings or conditions in which a person, animal, or plant lives or operates