The reason is that the axis of the Earth's rotation is tilted relative to the plane of the Earth's orbit around the Sun.
(The reason; is; that the axis of the Earth's rotation is tilted relative to the plane of the Earth's orbit around the Sun) Context(The reason is,List([0, 13))):(the axis of the Earth's rotation; is tilted; relative to the plane of the Earth's orbit around the Sun)
The reason is,List([0, 13))
The reason the axis of the Earth's rotation
is is tilted
that the axis of the Earth's rotation is tilted relative to the plane of the Earth's orbit around the Sun
relative to the plane of the Earth's orbit around the Sun