Open the brackets using the verbs in Passive Voice .

Eight dogs (kill) to make one fur coat.
A lot of dolphins (hurt) by boats.
Animals (disturb) often by tourists.
Millions of trees (cut) for making paper. Water (pollute) often by farms.

Eight dogs are killed to make one fur coat. A lot of dolphins are hurt by boats. Animals are often disturbed by tourists. Millions of trees are cut for making paper. Water is often polluted by farms.