One major way in which chlorofluorocarbons can enter the stratosphere is ____.
A) from the exhaust of high-altitude aircraft
B) in an inversion
C) in building thunderstorms that penetrate into the lower stratosphere
D) from the rupture of radiosonde balloons
Question 2
If the weather forecast predicts the arrival of a warm front to your area for the weekend, should you expect RAIN or CLEAR SKIES?