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