вставить нужные буквы в текст!WHAT IS ACID RAIN?Acid rain is a result of air pollution. When any type of fuel is burnt, (17)The smoke that comes from a fire or the fumes that come out of acar exhaust don't just contain the sooty grey particles that you can see -(18)Power stations, factories and cars all burn fuels they also contains lots ofinvisible gases (19) . Some of these gases (especially nitrogen oxidesand sulphur dioxide) react with the tiny droplets of water in clouds toform sulphuric and nitric acids. The rain from these clouds then falls asvery weak acid - (20) . The release of sulphur dioxide can alsooccur naturally when a volcano erupts.Acid rain can be carried great distances in the atmosphere, not justbetween countries but also from continent to continent. The acid can alsotake the form of snow, mists and dry dusts. The rain sometimes fallsmany miles from the source of pollution but wherever it falls (21)In the 1970s the effects of acid rain were seen at their worst.Forests all over the world are dying, in Scandinavia the fish are dying;lakes were crystal clear (22) . Many of Britain's freshwater fish arethreatened, their eggs are damaged and deformed, fish are being hatched.This in turn leads to fish-eating birds and animals also being affected.A it can have a serious effect on soil, trees, buildings and water.B acid rain can cause trees to grow more slowly.C seems to have more effect in some areas than it does in others.D but now contain no living creatures or plant life.E that is why it is known as 'acid rain".F that can be even more harmful to our environment.G and therefore they all produce polluting gases.H lots of different chemicals are produced.​