When you are tanning yourself on the beach, which part of the atmosphere protects you from the harmful rays of the sun?
A) stratosphere
B) troposphere
C) mesosphere
D) ionosphere
E) chronosphere

Which statement best describes how the loudness of the sound affects the high-pressure region created by the sound wave? a. a louder sound has no effect on the pressure created. b. a louder sound means a high-pressure region that is higher. c. a louder sound means a high-pressure region that is not as high.