Acid rains
When experts talk about acid rain, one is always a very unpleasant incident which happened in the USA. Then, in the town of Wheeling drizzling rain for three days, which was more acid lemon juice.
In normal precipitation falling as rain, also contains a number of acids, and is considered normal. But this time exceeded the normal acidity of 5000 times.
First of all, we must say that the very nature of acid rain does not exist. Acid rains are common.
The reason for their occurrence in the fact that almost all countries around the world every year increases air pollution.
This is due to burning of fossil fuels: coal, oil and gas.
As a result, the atmosphere releases massive amounts of acid gases. They pollute the atmosphere and not just a long time remain in it, and transported over long distances. When the rain, these pollutants combine with moisture in the atmosphere and then normal precipitation in the form of rain are dangerous acid rains.
Acid rain brings great harm to nature and human health. The water in the seas, rivers and lakes unsuitable for life.
In Canada, for example, due to frequent acid rain for more than 4 thousand lakes declared dead, another 12 thousand on the verge of death. Disturbed biological balance of 18 000 lakes in Sweden.
In Norway, the fish is no longer a part of the South Lakes.
Cause great damage to acid rain forests, parks and gardens. Turn yellow and fall off the leaves, young shoots are made brittle as glass, and broken.
In Germany, the acid rains killed more than half of all oil.
Acid rain corrodes even the metal, resulting in faster destroyed bridges, broken aircraft. Many historical monuments that have been around for millennia and have been preserved to our days, may now be lost because of acid rain.
Let's save the planet together!
Thank you very much for your attention. The presentation was developed by: Arina Muhimhanva Lisa Karamyzova 8 «V»
