-
Clean, dry air at sea level is made up of ___________.
- 77 percent nitrogen and 21 percent oxygen
- 78 percent nitrogen and 20 percent oxygen
- 78 percent nitrogen and 21 percent oxygen
- 80 percent nitrogen and 20 percent oxygen
Wrong! The correct answer is C. 78 percent nitrogen and 21 percent oxygen.
Statement No. 96: Clean, dry air at sea level is made up of 78 percent nitrogen and 21 percent oxygen.
|
| |