This factor, combined with the tilt of the earth's axis, is believed to cause seasonal climate changes which are out of phase in each hemisphere.
(This factor; combined; with the tilt of the earth's axis) (This factor, combined with the tilt of the earth's axis; is believed; ) (This factor, combined with the tilt of the earth's axis; to cause; seasonal climate changes which are out of phase in each hemisphere) (seasonal climate changes; are; out of phase)
This factor This factor, combined with the tilt of the earth's axis This factor, combined with the tilt of the earth's axis seasonal climate changes
combined is believed to cause are
with the tilt of the earth's axis
seasonal climate changes which are out of phase in each hemisphere
out of phase