The illustration shows the relative positions and motions of the Earth and the Sun. Which of the following determines the length of a year on the Earth?
Rotation of the earth
Rotation of the sun
Tilt of the axis
of the earth
Orbit of the earth
around the sun
C
a
b
The direction of rotation of the Earth on its axis.
The speed of the rotation of the Earth on its axis.
The time for one orbit of the Earth around the Sun.
The amount of the tilt of the Earth on its axis.
Ос
Od