conclusion paragraph about smog (50 words)
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Answer:
Smog
Smog is a kind of air pollution, originally named for the mixture of smoke and fog in the air.
Classic smog results from large amounts of coal burning in an area and is caused by a mixture of smoke and sulfur dioxide.
In the 1950s a new type of smog, known as Photochemical Smog, was first described.
Smog is a problem in a number of cities and continues to harm human health.
Ground-level ozone, sulfur dioxide, nitrogen dioxide carbon monoxide are especially harmful for senior citizens, children, and people with heart and lung conditions such as emphysema, bronchitis, and asthma.
It can inflame breathing passages, decreasing the lungs' working capacity, and causing shortness of breath, pain when inhaling deeply, wheezing, and coughing.
It can cause eye and nose irritation and it dries out the protective membranes of the nose and throat and interferes with the body's ability to fight infection, increasing susceptibility to illness.
Answer:
Smog is a type of air pollutant; the word "smog" is a combination of smoke and fog. Classic smog results from large amounts of coal burning in an area and is caused by a mixture of smoke and sulfur dioxide.
London is where it first happened. Coal fires are now illegal in London, and trains are driven by other fuels. In cities like Los Angeles it is the exhaust fumes of cars which cause the smog.
Delhi is supposed to be the most polluted city on Earth.[1] Smogs cause lung diseases and increase the death rate. According to one estimate, air pollution causes the death of about 10,500 people in Delhi every year.[2][3][4]
Peking (Beijing) is another city where air pollution is serious.[5] Car emissions and coal burning are the main reasons for their pollution. They also get pollution from some neighbouring regions, due to the pattern of air movement in the area.