What do you call the imaginary line running from the magnetic north and south poles. It is tilted 23.50 degrees from a line perpendicular to Earth's ecliptic plane.
AXIS
What factors does the amount of insolation (energy received on Earth surface) depend on?
1) length of daytime& nighttime 2) Solar altitude (angle of the sun)
What does the North Pole experience when it is pointed toward the Sun?
MORE DAYTIME
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