Across
- 3. reuse, reduce, ______
- 5. the first victim of extinction
- 8. an issue facing many species today
- 9. the "lungs" of the earth
- 10. snakes and lizards
- 12. a main contributor to global warming
- 13. a disappearing layer of our atmosphere
- 14. our planet
- 16. what will eventually happen if we let this get out of control
Down
- 1. a gas that traps heat
- 2. cutting down the trees
- 4. they are all dying
- 6. the largest group
- 7. we belong to this category
- 11. remove carbon dioxide, produce oxygen
- 12. why people are cutting down trees
- 14. organization for the environment
- 15. they fly!