Which of the following are periods in the geological time scale? Check all that are true. A Paleozoic Era B Cenozoic Era C Precambrian Time Darwinian Time D Mesozoic Era

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.