25.

1. air pollution

2. endangered species

3. to drop litter

4. a set of rules

5. unleaded petrol

6. rubbish bags

7. pollution levels

8.  logging companies

9. to grow crops

10.  build roads

26.

1. to shout at sb

2. late at night

3. advertising on a paper

4.  to look forward to smth

5. cures for cancer

6. millions of kinds

7. to drop litter on beaches

8. keep off the grass