15. Why is it important that Earth’s orbit is nearly circular?

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1 point
This prevents massive temperature fluctuations that could occur with a more extremely elliptical orbit.
This allows for massive temperature fluctuations that occur with a more circular orbit.
This prevents massive temperature fluctuations that could occur with a more circular orbit.
This allows for gravitational fluctuations that occur with a more extremely elliptical orbit.

The correct answer is:

This prevents massive temperature fluctuations that could occur with a more extremely elliptical orbit.