A rain in which the precipitation is unusually acidic is called an acid rain. It contains high levels of hydrogen ions. Acid rain is caused when sulphur dioxide and nitrogen dioxide emissions react with water molecules in the air and result in producing acids. These chemicals are produced because of natural sources like decay of vegetation, volcanoes and also from manmade sources like emissions from factories and various types of pollution in the atmosphere. When these gases react with water that is present in the air, form into various acidic compositions. Acid rains are very harmful to the atmosphere. Steel structures like bridges and towers corrode because of the acid. It also results in the peeling of paint from the painted surfaces like buildings. Stone structures get eroded because of the acid in the rain. Acid rain shows adverse effects on human health, forests, sources of fresh water like rivers and streams, and on soil affecting different life forms surviving in these mediums. What Is Smog?The term smog was first coined during the 1950s when it was used to describe a mixture of smoke and fog experienced in London. Major cities along the west coast of America were also experiencing a different type of air pollution.Smog occurs when emissions from industry, motor vehicles, incinerators, open burning and other sources accumulate under certain climatic conditions. There are two types of smog: summer (the type of smog first experienced in America) and winter (the one first noticed in London).Autumn And Winter Smog (Particles)During the cooler months (April to September), Melbourne is more affected by the accumulation of fine particles, which come from motor vehicle emissions, wood smoke, other combustion processes and photochemical processes in the air.Temperature inversions in winter mean that warm air higher in the atmosphere traps pollutants in the layer of cold air closer to the ground. These inversions can last for several days and cause 'scummy' brown hazed horizons until dispersed by wind or rain.The fine particles scatter sunlight, reduce visibility, soil buildings and fabrics and provoke existing respiratory diseases and other health problems.Photochemical Or Summer SmogIn the warmer months (October to March), photochemical smog (summer smog) is caused by the action of sunlight on a mixture of hydrocarbons and oxides of nitrogen. This smog contains secondary pollutants such as ozone, aldehydes and fine particles.
Er liest viel. er liebt es, Romane von zeitgenössischen Autoren zu lesen. Sie in der Schule liest? Mein Onkel war ein Schriftsteller. schreibt er Bücher. Ich liebe es, sein Buch zu lesen. 2 morgen mein Freund geht in die Stadt. er würde mich mit ihm zu nehmen. Sie gehen aus der Stadt? 3, was Sie zum Frühstück? Ich in der Regel essen ein Sandwich und Tee trinken. Sie viel essen? Nein, ich habe nicht viel zu essen. 4. Ihre Schwester zur Schule geht. sie hat immer eine Menge Fragen. Sie ihr helfen? Ja, ich helfe ihr immer. Mutter und ich immer helfen ihr. Herr Müller, können Sie mir helfen? Kinder, können Sie mir helfen? 5 Ich empfehle Ihnen in diesem Artikel. dieser Artikel empfiehlt uns, unser Lehrer. Herr Müller, die Sie mir raten? Kinder, die du mir povosetuete? 6 in dieser Wohnung hat drei Zimmer. Jedes Zimmer in den beiden Fenstern. in diesem Raum, Schrank, Schreibtisch und TV. in einem anderen Raum-Bett und zwei Stühlen. 7 I in der Regel verlassen das Fahrrad auf der Straße. mein Bruder nicht das Rad auf der Straße zu verlassen. wo Sie Ihr Fahrrad zu verlassen?
0,0(0 оценок)
Полный доступ
Позволит учиться лучше и быстрее. Неограниченный доступ к базе и ответам от экспертов и ai-bota
Оформи подписку
