Перевести активный залог в пассивный залог

2) Too much energy is wasted by people.

3) Rainforests are cut down by timber companies.

4) Rare animals are hunted by poachers.

5) Forests are destroyed by acid rain.

6) Greenhouse gases are produced by power stations.

7) The sea is polluted by oil.

8) Too much fish are caught by fishermen.