Answer: Leftover rocky planetesimals that formed in the inner part of the disk of the newly forming solar system, inside the frost line are Asteroids.
Explanation: To find the answer, we need to know more about the Formation of terrestrial planets.
Thus, we can conclude that, leftover rocky planetesimals that formed in the inner part of the disk of the newly forming solar system, inside the frost line are Asteroids.
Learn more about the Formation of terrestrial planets here:
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