Final answer:
The Earth's orbit is not a perfect circle, but 'axial tilt' refers to the tilt of Earth's axis, not its orbital shape, which is elliptical due to the orbit's eccentricity.
Step-by-step explanation:
The statement that the Earth does not orbit the Sun in a perfect circle due to 'axial tilt' is false. The phenomenon described as 'axial tilt' refers to the angle at which the Earth's axis is inclined relative to its orbit around the Sun, which is approximately 23.5°. This axial tilt is responsible for the changing seasons on Earth. The Earth's orbit around the Sun is indeed not a perfect circle but rather an ellipse; however, this is attributed to the eccentricity of Earth's orbit, not its axial tilt.