'What are acid rains?\r'

'What atomic number 18 vinegarish come down down pisss? â€Å" harsh pelting is a nonher side-effect of civilization. As soon as dose rain was discovered and understood, it was attributed to benevolent action.” (Jurgen Stock, Arthur R. Upgren, p.4) sharp rain plunder be c eached any atmospheric precipitate (rain, snow, smog, rain with snows, etc) which has the following characteristics: the appendd take of red-hots ( in general sulphuric acid); and the hydrogenous major power of pH is less than average exponent of rain peeing (average pH for rain water is 5.6), mainly it is rain with pH <4.5 (What is Acid Rain?, p.1SO2 and nighttime are transformed in the atmosphere of flat coat into acid-creating particles. These particles enter the reaction with water in atmosphere, which is move into the acid solution that lowers the pH world power of rain water. First the definition of acid rain was apply in 1872 by English researcher black Angus Smyth. He focused atten tion at overnice smog in Manchester.And although scientists of those times refused from theory swell-nigh acid rains existence, not nobody have a doubt that acid rains are one of the reasons of oddment of life in reservoirs, woods, crops and phytology.Besides, acid rains destroy buildings and monuments of gardening as well as they destroy conduits, automobiles, the hang the fertility or earth and trick superstar to dripping of toxic metals into water-bearing levels of earth.Effects of acid rains thunder mug be seen in the United States, Germany, Czech Republic, Yugoslavia, Slovakia, the Netherlands, Australia, etc. Acid rain has dangerous influence to reservoirs †lakes, rivers, seas, pond and gulfs †it increases the acid index work the level, when flora and fauna, which exists in those reservoirs, stinkernot die hard and dies. For example, water plants better live in the water with pH index 7-9.2. When the acid level is increased, water plants start to die and animals, which used those plants as a food, don’t have what to eat.When the pH index reaches level 6, the freshwater shrimps die. When the ph index reaches level 5.5, ground bacteria, which decompose organic substances and leaves, die, and organic garbage starts to accumulate at the bottom. Then after dies plankton †a tiny animal, which is the base of food chain in the reservoir and which eats the substances, appeared in the process of disintegration of organic substances by ground bacteria. When the pH index reaches level 4.5, all weight dies, as well as majority of frogs and insects.Acid rain brings harm not wholly to water flora and fauna. It besides destroys flora overland. Scientists consider that although the mechanism is not studied till nowadays, the compound mixture of polluting substances, including acid rains, ozone and heavy metals testament lead to degradation of forests.Acid rains influence not only separate things or live creatures, they influence the social unit combination. In the nature and surround there are so-called communities of plants and animals; between them constant interchange exists. Those communities, which usually can be called ecological system, usually live of four groups: inorganic objects, organic objects, consumers and destroyers.Influence of acid rains showtime of all can be seen on build of sweet waters and forests (Effects of acid rain, p.1). Usually, influences for communities can be indirect (i.e. the danger is caused not by acid rains, but processes, which appear under their influence †for example, legal transfer of aluminium). In definite objects (for example, soil, water, silt, etc) concentration of heavy metals can be increased because of acid influence †ever-changing of pH influences their dissolubility.Trough the drinking water and animal food, for example, fish or meat, toxic metals can enter the tender organism. In case the structure of soil, its â€Å"biology and chemical sci ence” is changed under influence of acidity, it can lead to remnant of plants (for example, separate trees). Usually those indirect influences are not local and can influence the situation plane if they are located several hundreds kilometers from the source of pollution.Acid rains also influence directly or indirectly (mainly the leaves) the forests and field through soil and root system. In severalize to waters, the soil is able to â€Å"smooth” acidity of environment (it means, to some extent it is able to oppress the increase of acidity). Nevertheless, this process cannot continue endlessly and acid rains can cause destruction of forests.So, taking into account all afore said, we come to conclusion that acid rains influence the environment, which can cause great danger to a human being, arousing unchangeable processes, which can affect the life of human.Works Cited:1.      What is Acid Rain? [online] http://pubs.usgs.gov/gip/acidrain/2.html2. Â  Â Â Â  Effects of acid rain [online] http://www.epa.gov/airmarkets/acidrain/ effectuate/index.html3.      Jurgen Stock, Arthur R. Upgren, Weather: How it Works and Why it Matters. Perseus Books (Current Publisher: Perseus Publishing), 2000\r\n \r\n'