We all know the world has its problems, particularly where the environment is concerned. But not too many of us know the details, and the stories behind those problems.
The poisoning of the world's land, air, and water is the fastest-spreading disease of civilisation. It probably produces fewer headlines than wars, earthquakes and floods, but it is potentially one of history's greatest dangers to human life on earth. If present trends continue for the next several decades, our planet will become uninhabitable.Overpopulation, pollution and energy consumption have created such planet-wide problems as massive deforestation, ozone depletion, acid rains and the global warming that is believed to be coused by the greenhouse effect.The seas are in danger. They are filled with poison: industrial and nuclear waste, chemical fertilisers and pesticides. The Mediterranean is already nearly dead; the North Sea is following. The Aral Sea is on the brink of extinction. If nothing is done about it, one day nothing will be able to live in the seas.Every ten minutes one kind of enimal, plant or insect dies out for ever. If nothing is done about it, one million species that are alive today will have become extinct twenty years from now.Air pollution is a very serious problem. In Cairo just breathing the air is life threatening- equivalent to smoking two packs of cigarettes a day. The same holds true for Mexico City and 600 cities of the former Soviet Union.Industrial enterprises emit tons of harmful substunces. These emissions have disastrous consequences for our planet. They are the main reason for the greenhouse effect and acid rains. An even greater environmental threat are nuclear power stations. We all know how tragic the consequences of the Chernobyl disaster are.People are beginning to realise that environmental problems are not somebody else's. They join and support various international organosation and green parties. If governments wake up to what is happening- perhaps we'll be able to avoid the disaster that threatens the natural world and all of us with it.
1. Do you like to get letters? – Yes. I do. 2. Whom is your friend talking to? – He is talking to our teacher. 3. My friend lives in this city. 4. Who is standing near the window? – My sister does.5. Many workers of our Ministry study foreign languages. 6. Are these students doing an exercise or copying a text? 7. My son always comes to his work in time. 8. Where are you going in the evening? – We are going to the park.
1. If had phoned me yesterday, I would have told you.
<span>2. If you took more exercise, you might feel better. </span>
<span>3. If Tim would have listened more carefully, he wouldn’t have made that mistake. </span>
<span>4. If we’d found suitable premises, we’d have moved earlier. </span>
<span>5. If people kept their offices more tidy, it might present a better image to our visitors. </span>
<span>6. If I’d known about their financial problems, I wouldn’t have done business with them. </span>
<span>7. If our side had been better prepared, we could have succeeded in the negotiations . </span>
<span>8. I wouldn’t worry if I were you. </span>
