Across
- 3. the 6- letteredword of the 3 (R's)
- 5. the organism that undergoes the process photosynthesis
- 8. the process of clearing forests
- 9. A synthetic polymer that polutes the earth
Down
- 1. The process that plants use to make their own food
- 2. the method of collecting rainwater and saving it
- 4. A species in the risk of extinction
- 6. the melting of ice glaciers
- 7. covers 97% of the earth