What happens to the air as it warms up? A) It rises.
B) It sinks down.
C)Its temperature decreases.
D) It turns into clouds.

When it is summer at the south pole, a. the northern hemisphere is tilted toward the sun. b. the southern hemisphere is tilted away from the sun. c. the northern hemisphere is tilted away from the sun. d. both the southern and northern hemispheres are tilted toward the sun.