Because people had as pets when they got to big they let them into the wild and they came a different place
A picture is needed to answer.
Active transport refers to a substance moving from areas in which it has low concentration to an area with high concentration, one example i guess is endocytosis, "<span>the taking in of matter by a living cell by invagination of its membrane to form a vacuole"</span>
Well, the average orbital speed of ceres is about 17.91 km/s if that helps. Sorry its not much of an answer
