Tilt of Earth - since Earth's axis is tilted relative to the plane of Earth's orbit, the amount of sunlight reaching the poles varies with the seasons.
(Earth's axis; is tilted; ) (the amount of sunlight; reaching; the poles) (the amount of sunlight reaching the poles; varies; T:Tilt of Earth - since Earth's axis is tilted relative to the plane of Earth's orbit)
Earth's axis the amount of sunlight the amount of sunlight reaching the poles
is tilted reaching varies
the poles
T:Tilt of Earth - since Earth's axis is tilted relative to the plane of Earth's orbit