Because the Sun's rotational axis lies at an angle of 7.25 degrees to the perpendicular of the ecliptic the Earth tends to face the effects of activity on the Sun's southern hemisphere in springtime and the northern hemisphere in autumn.
(the Sun's rotational axis; lies; at an angle of 7.25 degrees to the perpendicular of the ecliptic) (the Earth; tends; to face the effects of activity on the Sun's southern hemisphere in springtime and the northern hemisphere in autumn) (the Earth; to face; the effects of activity on the Sun's southern hemisphere in springtime and the northern hemisphere in autumn)
the Sun's rotational axis the Earth the Earth
lies tends to face
at an angle of 7.25 degrees to the perpendicular of the ecliptic
to face the effects of activity on the Sun's southern hemisphere in springtime and the northern hemisphere in autumn
the effects of activity on the Sun's southern hemisphere in springtime and the northern hemisphere in autumn