Describe the forms of natural selection.

Forms of natural selection:
1. Driving selection – begins its action when changes in the external environment. Example: when a rat, the Colorado potato beetle gets used to pesticides.
2. Stabilizing selection – the action of which is directed at individuals who have a deviation from the average norm. Example: Insect-pollinating in which shape and size are in themselves stable.
3. Disruptive selection – leads to divergence, and forms the variability of one species. Example: when one species of frogs, turtles, etc. different colors, or the length of the legs.
4. Sexual selection – by means of reproduction. Example: a lioness conceived, bore and gave birth to healthy lion cubs.