Across
- 2. opposite of dirty
- 4. we celebrate on April 22
- 5. large group of trees
- 8. to throw trash away where it doesn't belong
Down
- 1. instead of throwing cans away, _______
- 3. we all need this, so don't waste it
- 6. third planet from the sun
- 7. Pine, Oak, Walnut, for example