<span>Smoking leads to the development of the three main diseases of fatal: lung cancer, chronic bronchitis and emphysema; coronary disease.</span>
<span>On the example of several countries, where Smoking has become a mass habit for a long time, it was proven that tobacco is the cause of mortality from lung cancer in 90\% of all cases of bronchitis and emphysema in 75\% and from heart disease in approximately 25\% of all cases.</span>
<span>Approximately 25\% of regular cigarette smokers will die prematurely due to Smoking. Many of this number could live for 10, 20 or 30 years longer, i.e. in this case the average loss of years of life is significant. Died as a consequence of Smoking on average lose 10-15 years of his life.</span>
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<span>In two words, other than the obvious damage to the blood vessels and the respiratory system, it is still and oxygen starvation of all cells, therefore, all human organs.</span>
1)N.I.Lobachevsky <span>is a Great Russian mathematician and the creator of non-Euclidean geometry (pr simple)
Is </span>N.I.Lobachevsky a Great Russian mathematician and the creator of non-Euclidean geometry?
N.I.Lobachevsky is not a Great Russian mathematician and the creator of non-Euclidean geometry<span>
</span>
1)hardly
2)hard
3)hardly
4)hard
5)hard
6)hardly
7)hard
8)hardly
9)hardly
10)hard
Я уверена на 100\%
