How tilted is the axis of the earth's rotation as compared to the plane of the earth's orbit?
a. 3.5°
b. 13.5°
c. 23.5°
d. 33.5°

Respuesta :

C. 23.5 degrees
This tilt in the axis causes the seasons. 
Hope this helps.
AL2006
The Earth's axis is about 66.5 degrees out of the plane of the orbit.
It's about 23.5 degrees away from being "straight up and down".