Problem: A population of one flowering species consists of individuals with either pink flowers or white flowers in a field. A daycare program takes a group of children to the field and lets them run around for an afternoon. Before the group of children arrived, there were equal numbers of pink flowers and white flowers. After the children leave, the flowers that are not randomly trampled and remain intact are almost all pink ones, with only a few white flowers remaining. What mechanism of evolution has occurred? Need Assignment Help?