Snow or ice that slides down a steep slope at great speed. Avalanches occur when the force of snow on the surface is formed under the influence of heavy snowfall, rapid melting of snow, rainfall, recrystallization of a loose layer of snow with a deepening. According to the nature of the landslide, it is divided into landslides, troughs and landslides. During an avalanche of dry snow, a wave of air appears in front of it, which has time to spread. Avalanches follow their former trampled path, the lake. 2 million m3, and the impact force is up to 60 - 100 t / m3. In landslide-prone mountains (Ili, Semirechye Alatau, etc.) avalanche protection systems (snow shields, artillery shelling of dangerous slopes, etc.) are established, deforestation is prohibited. Trees will be laid on landslide-prone slopes. Avalanches are caused by the collapse of vertical hanging glaciers and their downward movement.
ответ: Task1: 1) b, 2) c, 3) b, 4) a, 5) a, 6) b Task 2: 1)a, 2)c 3)c, 4)a, 5)a, 6)b, 7)a, 8)a, Task 3: 1) Why did she lose weight lately? 2)If you take these vitamins, you will recover within a month, I am sure.3) I have coughed. 4) Do your eyes hurt when you look at the sun? 5) You have slept for nine hours. 6) I hope will soon give up smoke.7) I have known this doctor since I was a child. Task 4: 1) Because they help to keep our health. 2) I have two or three big meals. 3) Usually I eat some bananas, appels and sandwiches. 4) Not often 5) No, I eat healthy food. 6) Yes, sometimes I go to the fast food restaurants with my friends. 7) I don't want to change my eating habits because I try to eat healthy food and do sports.
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cats. roses. boxes. buses. Mice. sheeps. Men. Children. Cinemas
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