Pollution

We are slowly (21)………the earth. The seas and rivers are (22)……….dirty to swim in. There is so much smoke in the air that it is (23)………to live in many of the world’s cities. In one well-known city, for example, (24)………gases from cars pollute the air so much that traffic policeman (25)……wear oxygen marks.We have cut (26)………so many trees that are now vast areas of wasteland all over the world. As a result, farmers in part of America can’t grow (27)……….to eat. In certain countries in Asia there is too little rice. Moreover, we do not take enough care of the countryside. Wild animals are quickly (28)……..For distance, tigers are rare in India now because we have killed too many for them to survive.We must act now before it is too (29)……….to do anything about us. Join us now. Save the earth. It is (30)………important to ignore.

We are slowly (21)………the earth. The seas and rivers are