Across
- 2. Habitat loss,Invasive species..
- 7. why:terrestrial species extinct
- 8. reusing resources to help earth
- 9. why: aquatic species extinct
- 11. for lumber/agriculture
Down
- 1. using faster than replaced
- 3. taking care of the earth
- 4. natural environment for species
- 5. increase in greenhouse gas
- 6. to trap heat in the environment
- 10. no plants/water hold ground