the correct answers are People depend on the atmosphere for the air they breathe. It screens out the sun's ultraviolet rays. Warm air has more moisture content than cool air.
It doesn't, it gets colder as you go higher.
Doldrums are caused by solar radiation from the sun. Because of this the sunlight beams warms the air and causes it to rise straight up instead of side to side (horizontally).
South-South-East, to be more precise - 150 degrees