Two factors which together cause the varying length of day and night are?
A. inclination of the earth on its axis and the rotation of the earth on its axis B. inclination of the earth on its axis and the revolution of the earth on its elliptical orbit C. the rotation of the eart on its axis and the revolution of the moon round the earth D. inclination of the earth on its axis and the revolution of the moon round the earth E. the revolution of the earth on its elliptical orbit and the inclination of the moon on its axis
