You are presented with the question "What falls from lower to higher altitudes?" and the following answer choices: 
- warm weather
 - sun's heat
 - rainfall
 - heat energy
 - kinetic energy
 - water vapor
 - colder and wetter
 - Greenhouse gasses

Now knowing that temperature falls from lower to higher altitudes and if the weather is warm, their temperature rises, choose the best answer.


 

 warm weather        