Those cycles are related to a periodic wobble in the tilt of the Earth's axis of rotation caused by gravitation.
(Those cycles; are; related to a periodic wobble in the tilt of the Earth's axis of rotation) (Those cycles; related; to a periodic wobble in the tilt of the Earth's axis of rotation) (rotation; caused; by gravitation)
Those cycles Those cycles rotation
are related caused
related to a periodic wobble in the tilt of the Earth's axis of rotation
to a periodic wobble in the tilt of the Earth's axis of rotation
by gravitation