Earth Day

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.

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.