1d, 2f, 3e, 4a, 5c, 6b 1. If I go on a diet I'll lose weight 2. If it's sunny tomorrow we'll go for a picnic 3. If John doesn't hurry he'll be late 4. If it snows we'll make a snowman 5. If there are no buses she'll have to take a taxi 6. If you are a good girl I'll buy you some chocolate
1. If I see John, I'll tell him your news. 2. He will be very pleased if it is really true. 3. If you go to town on Monday, you'll meet my brother Tom. 4. If you need help, my father will help you. 5. We'll have a picnic lunch if the day is fine. 6. If you ask a policeman, he will tell you the way. 7. I'll finish the job tomorrow if I can. 8. I won't require an umbrella if it doesn't rain. 9. If she thinks it over carefully, she'll form a clear opinion. 10. If they catch the bus now, they will arrive at half past nine. 11. He will find the answers if he looks at the back of the book. 12. If you want me to, I'll come) for a walk with you. 13. If he writes to her, she will answer at once. 14. If you wait) a few moments, the waiter wil bring your coffee. 15. He will lose weight if he stops eating too much. 16. If she is patient, I'll try to explain. 17. I'll wear a purle tie only if I must. 18. If we leave at once, we'll catch the early train. 19. If he does that again, his father will punish him. 20. If she drinks this medicine, she will feel much better.
The problem of environmental pollution becomes so acute as due to the growth of industrial and agricultural production, and due to a qualitative change in production under the influence of scientific and technological progressa.Mnogie metals and alloys used by people unknown to nature in its purest form, and although they are to some extent subject to recycling and re-use, some of them scattered, accumulating in the biosphere as waste. The problem of environmental pollution in full growth rose after in the XX century. significantly expanded the number of people they used metal began to produce synthetic fibers, plastics, and other substances having properties not only well-known nature, but harmful to the organisms in the biosphere. These substances (number and variety of which is constantly growing) after their use are not available in the natural cycle. Waste production activities increasingly pollute the lithosphere, hydrosphere and atmosphere of the Earth. Adaptation mechanisms of the biosphere can not cope with the increasing amount of neutralization of harmful substances its normal functioning, and natural systems begin razrushatsya.1) Pollution litosfery.Pochvenny cover the Earth is an essential component of the biosphere. That soil shell determines many processes occurring in biosfere.Nesovershenstvo agricultural practices leads to a rapid depletion of soil, and the use of extremely harmful, but cheap pesticides for pest management and to improve productivity exacerbates the problem. Equally important is the extensive use of grassland into desert huge tracts zemli.Ogromny harm soils causes deforestation.
