Ответ:

1. The animals are going to be harmed by the polluted water.

2. Most of the plastic has been recycled by the factory.

3. Something about the smog in our city should be done by them.

4. Will this environmental problem be solved by the government?

5. The beach is going to be cleaned by  the people im my town.

6. Lots of coastal areas have been polluted be oil tankers.