Answer:
Newport Beach has a warmer, Southern climate, which is why the family dresses lightly at night. Big Bear is located in the chilly mountain region, where things are naturally colder, so the family needs warmer clothing.
Explanation:
Newport Beach is located in the Southern region of California, and the nights are warmer. Big Bear is located in the mountains, so it's colder.
The levels of greenhouse gases in the atmosphere have been increasing due to the widespread burning of fossil fuels by the growing human populations.