Across
- 2. Chlorine and Florine contain compounds
- 3. Harmful substances causing pollution
- 6. cutting down trees on large scale
- 7. objects that don't allow light to pass through them
- 8. rain mixes with pollutants
Down
- 1. objects allow light to pass through them
- 3. chemicals use to destroy pets that harm plants
- 4. the soil is washed away by rain or by wind
- 5. the objects that are producing their own light