Angle of sun striking the earth, length of day both caused by the tilt of the earth relative to the plane of its orbit around the sun.
(Angle of sun; striking; the earth) (length of day; both caused; by the tilt of the earth relative to the plane of its orbit around the sun)
Angle of sun length of day
striking both caused
the earth
by the tilt of the earth relative to the plane of its orbit around the sun