Drager BG4 Statements of Fact 5 Questions taken from 2017 Drager BG4 Statements of Fact Progress Indicator: Question 8 of 15 8.  About _______ percent of clean, dry air at sea level is made up of argon, carbon dioxide, and small trace amounts of other gases. Choices: 0.03 3.00 0.01 1.00