Across
- 1. when a there aren't many animals left of a species
- 6. a movement to reduce pollution
- 8. The natural world; plants, animals, rocks..
- 9. when a species of animal disappears
Down
- 2. The surrounding area
- 3. scientific study of the environment
- 4. harmful to the environment
- 5. temperature rising do to greenhouse gases
- 7. another word for waste