Fifty percent of the gases making up the atmosphere are found below ________.
A) 10 miles (16.2 km)
B) 6 ½ miles (10.4 km)
C) 3 ½ miles (5.6 km)
D) 8 miles (12.8 km)

Question

Quizplus · Accepted Answer

The majority of atmospheric gases are concentrated in the lower layers, with 50% of the atmosphere's mass found below approximately 3 ½ miles (5.6 km) due to the gravitational pull of the Earth.

Fifty Percent of the Gases Making Up the Atmosphere Are