It is used to display the orientation of the cardinal directions. And their intermediate points.
Answer:
there is a big thing on ggl look it up i cant copy and paste it though just look it up and it will come up
Explanation:
What features are you referring to
Answer:
Greenhouse affect - atmosphere traps heat
Ice age - coldest phase of climate cycle
Sun's output - can vary
Greenhouse gases - atmosphere traps even more heat