Ответ:
1. Natural gas either occurs together with crude oil or forms separate deposits of gas alone.
2. Decomposition of both animal and vegetable remains over a period of many centuries without air is the source of natural gas.
3. In beds of sand, sandstones and limestones.
4. When a borehole reaches such a deposit the gas rushes up.
5. Russia has a gigantic network of pipelines.
6. Natural gas is an inflammable gas.
7. Natural gas consists of hydrocarbons with a very low boiling point.
8. Methane ( CH4 ) makes up approximately 85 per cent of the typical natural gas.
9. Natural gas has no distinct odour.
10. Yes, most of it we use as a fuel for the production of both heat and energy.
11. Natural gas is valuable also as an important chemical raw material for industry, as chemical technologists are able to obtain hydrogen, acetylene, carbon black and various chlorine derivatives.
12. Natural gas occurs mainly in Russia and some other CIS countries and in the United States where most of the extraction and utilization takes place.
13. In the Ukhta (Russia) and Emba regions (Kazakhstan), near Saratov, Fergana (Uzbekistan), Samara, Volgograd and Grozny.
14. In Europe they found rich deposits in Rumania and Italy, smaller ones in Austria and France. Germany also has several small but intensively worked fields.