Treatments. 1  Soak washcloth in warm water. 2  Dab washcloth on the boil. 3  This treatment allows the pus seeping out of bump, and as the result the boil will shrink.
The earth's atmosphere is approximatively 21% oxygen (really about 20.95%). 78% is nitrogen. The rest is a small mixture of other gases. 7 people found this useful.
Analysis of air bubbles trapped in fossils, such as in fossil amber, show that our air in earliest times contained about 35% oxygen. Today, the average oxygen content of our air is approximately 20%. In some larger, more polluted cities, oxygen content in the air has been measured at 12 - 15%.