The speed of the earth as it rotates on its axis determines the 24-hour-day we have.
(it; rotates; on its axis) (The speed of the earth as it rotates on its axis; determines; the 24-hour-day we have) (the 24-hour-day; have; we)
it The speed of the earth as it rotates on its axis the 24-hour-day
rotates determines have
on its axis
the 24-hour-day we have
we