What is a spectrum that measures the range of emerson exposure? a: ballantine scale b: imperforated structure c: perforated structure d: splash zone

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.