(Next Time You Should Put Your Answer Choices)
A. The atmosphere is composed of several layers that increase in density as altitude increases.
B. The atmosphere is composed entirely of nitrogen and oxygen, which react to form ozone.
C. The atmosphere is composed of masses of air particles that move very little, if at all.
D. The atmosphere is composed of masses of air particles that are constantly circulating.
The Answer Is D According To Study Island.
