Effects of the Combination of Revolution, Rotation, and the Inclination of the Axis If the earth's axis of rotation were perpendicular to the earth's orbit, then the sun's rays would always be directly vertical at the equator.
(the earth's axis of rotation; were; perpendicular to the earth's orbit) (the sun's rays; would be; directly vertical at the equator; T:then; T:always)
the earth's axis of rotation the sun's rays
were would be
perpendicular to the earth's orbit
directly vertical at the equator T:then T:always