Final answer:
If Earth had a circular orbit where it was always at the same distance from the Sun, the seasons on Earth would no longer exist.
Step-by-step explanation:
If Earth had a circular orbit where it was always the same distance from the Sun at all points along its orbit, the seasons on Earth would no longer exist. Seasons are caused by the tilt of Earth's axis, not the distance from the Sun.
The tilt causes different parts of Earth to receive varying amounts of solar energy throughout the year, leading to the formation of seasons. If the distance remained constant, the tilt would still result in the same amount of solar energy being received throughout the year, resulting in a consistent climate.
Learn more about impact of a circular orbit on Earth's seasons