Answer: The earth's spin axis is tilted with respect to its orbital plane.
Explanation:
This is what causes the seasons. When the earth's axis points towards the sun, it is summer for that hemisphere. When the earth's axis points away, winter can be expected.
I'd say B and D definitely, and also E but I'm not entirely sure about that
Cultural geography is also called human geography since it does have to do with how humans interact with environments. It is the study of how the various aspects of physical geography affect individual cultures.