Answer:
Coevolution
Explanation:
Coevolution is a process of natural selection in which two or more species evolve exerting selection pressures on each other. It means that those species reciprocally affect each other's evolution.
The coevolution of a flowering plant species and a hummingbirds species is a typical example of this phenomenon. The flowering plant adapt to a pollinator (the hummingbird), which in turn adapts to the plant. Both the shape of the flower and the shape of the beak of the bird adapt perfectly to the each other getting the proper effects. The flower guarantees the dispersion of its pollen while the bird guarantees its food.
