27. Value based questions II

 

The number of people is lowerhigher in a closed and crowded areas. We all know that we inhale oxygencarbon dioxide and exhale oxygencarbon dioxide. Therefore, in a crowded area, everyone exhales carbon dioxideeveryone exhales carbon monoxide. As a result, there is much more carbon dioxide in the air than there is oxygen available for inhalationless carbon dioxide in the air than there is oxygen available for exhalation. Hence, breathing in a closed and crowded place is easydifficult.