Approximately what fraction of the atmosphere is composed of oxygen? Looking at the data again, the atmosphere is approximately 78% Nitrogen, 21% Oxygen and 1% other gases. 1/2 1/5 1/4 1/3

The correct answer is .Explanation:According to the data provided, the atmosphere is composed of approximately 21% oxygen. To express this as a fraction, we can divide 21 by 100, which gives us . Simplifying this fraction, we get . Therefore, the fraction of the atmosphere composed of oxygen is approximately .