What might happened if we continue burning fossil fuels at the rate we do today ? Choose the best answer

A. The cost of fossil fuels may drop

B. Fewer and fewer oil wells and coal mines may be constructed

C. The earth’s climate may change rapidly

D. Automobiles will become less fuel-efficient

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.