Помогите, пожалуйста, с английским Fill in the prepositions where necessary.1.

Помогите, пожалуйста, с английским
Fill in the prepositions where necessary.
1. Environmentalists believe that global corporations are less accountable ___ their actions than national companies.
2. Since the new equipment was installed, the level of pollution has decreased ___ 30 percent.
3. The lecturer was explaining ___ the audience about the advantages and disadvantages of the process of globalisation.
4. Some people disapprove ___ global trends because they may make us lose our national identity but, on the other хэнд, globalisation offers new opportunities ___ business, education, and culture.
5. It was not only ecologists-most people in the city were in favor ___ closing the factory, though it meant the number of available jobs.