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The atmosphere is artificial

The atmosphere artificial – the mix of gases created specially which provides gas exchange and breath at people and animals at their isolation from the environment. In medicine the atmosphere artificial with the increased content of oxygen, containing helium instead of nitrogen, etc. is used.

 
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Scientists from the Oxford university conducted a number of researches during which they came to a conclusion that vegetarianism can be harmful to a human brain as leads to decrease in its weight. Therefore scientists recommend not to exclude completely from the diet fish and meat.