The change of seasons is mainly the result of the tilt of Earth's invisible spin axis, which is inclined 23.5 degrees in comparison to the axis of the Sun.
(The change of seasons; is mainly; the result of the tilt of Earth's invisible spin axis) (Earth's invisible spin axis; is; inclined 23.5 degrees in comparison to the axis of the Sun)
The change of seasons Earth's invisible spin axis
is mainly is
the result of the tilt of Earth's invisible spin axis
inclined 23.5 degrees in comparison to the axis of the Sun