The proposition that higher average temperatures would result in less precipitation nationwide is true.

The proposition that higher average temperatures would result in less precipitation nationwide is true.

• A. True
• B. False
• C. Not enough information
• D. It depends on context

Answer: (B)

Temperature and precipitation are linked through how much moisture the air can hold. Warmer air can carry more water vapor, so as temperatures rise, the atmosphere gains moisture. When that moisture condenses, it leads to precipitation, and warming often shifts atmospheric circulation in ways that can intensify rainfall in many places. Because precipitation depends on both moisture supply and the lifting of air due to weather patterns, you can’t expect a uniform nationwide drop just from higher average temperatures. In fact, warming tends to increase the potential for heavy precipitation and change where rain falls, even if some regions become drier.