Across
- 3. causes erratic weather conditions
- 5. the cutting down of trees for use of its land
- 6. a biological community of interacting organisms and their physical environment
- 8. the introduction of harmful materials into the environment
Down
- 1. Primary Greenhouse Gas emitted through human activities
- 2. the planet that humans exist on
- 4. the planting of native trees in an attempt to restore an area to what resembles a natural forest
- 7. able to decay naturally