A. Earth's distance from the sun
B. Earth's axial tilt
C. The sun's intensity
D. Earth's rotation
Answer: Earth's axial tilt
What is the primary reason for the seasons on Earth?
Additional Information: The seasons on Earth are primarily caused by the axial tilt of the planet. As Earth orbits the sun, different parts of the planet receive varying amounts of sunlight throughout the year.
Subjects: Physics