This film explains the seasons by showing the yearly course of the earth around the sun and the changing tilt of the north-south axis, which causes changes in the length of days.
(the north-south axis; causes; changes in the length of days) (This film; explains; the seasons) Context(This film explains,List([0, 18))):(This film; explains the seasons by showing; the yearly course of the earth around the sun and the changing tilt of the north-south axis)
This film explains,List([0, 18))
the north-south axis This film This film
causes explains explains the seasons by showing
changes in the length of days
the seasons
the yearly course of the earth around the sun and the changing tilt of the north-south axis