Across
- 3. a living organism of the kind exemplified by trees, shrubs, herbs.
- 5. make smaller or less in amount, degree, or size.
- 7. the strength and vitality required for sustained physical or mental activity.
- 8. prevention of wasteful use of a resource.
- 11. the surroundings or conditions in which a person, animal, or plant lives or operates.
- 12. the life-supporting component of the air.
Down
- 1. a layer in the earth's stratosphere at an altitude of about 6.2 miles (10 km) containing a high concentration of __________
- 2. the weather conditions prevailing in an area in general or over a long period.
- 4. a substance or gas that poisons an environment.
- 6. a very large expanse of sea.
- 9. the planet on which we live; the world.
- 10. use again or more than once.