As a lakes water temperature decreases, what happens at the lakes surface and the air above the lake?

Energy is lost by the lake directly to outer space.
More energy is gained by the lake than by the air.
The temperature of the air remains constant.
Energy is gained by the air from the lake.

What is the difference between the cultures of central asia and the caucasus region? the majority of people in central asia are muslim; the majority in the caucasus region are christian. the primary language in central asia is armenian; the primary language in the caucasus region is russian. central asia has been plagued by ethnic unrest; the caucasus region has had little ethnic conflict. the effects of soviet rule can still be seen in central asia; the caucasus region has developed its own identity since the fall of the ussr.