The ozone layer protects living organisms on earth by
a. enhancing solar energy
b. blocking solar ultraviolet (uv) radiation
c. blocking solar infrared (ir) radiation
d. preventing escape of water vapor

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.