14 0°F - - - - - - - - - - - - - - - - - - - - 20°F - - - - - - - - - - - - - - - - - - - - 40°F - - - - - - - - - - - - - - - - - - - - 60°F _____________________ Earth As warm air rises, it cools, condenses and freezes in the upper atmosphere. What happens as it falls back to Earth? a. It undergoes no chemical or physical change b. It undergoes a physical change from solid to liquid c. It undergoes a physical change from solid to gas d. It undergoes a chemical change from solid to gas e. It undergoes a chemical change from a solid to liquid