Across
- 2. example of a nonrenewable resource
- 4. Resources once they are gone, they can’t be replaced
- 6. author of the book called Silent Spring
- 7. when people purposely clear trees (forested land)
Down
- 1. The introduction of harmful materials into the environment.
- 3. Recognized on April 22nd every year
- 5. pollution contamination of the indoor or outdoor environment
- 7. activist who helped promote Earth Day
- 8. when there are more people than can live on the Earth in comfort