What Is Natural Selection? — Definition & Importance

In a particular habitat, there are red and blue fish. Sharks prefer the taste of the blue fish and therefore target them when they are hunting.

Peacock females pick who they want to mate with depending on how large and bright the tails are. The larger and brighter the male's tail the more likely they are to mate with a female.

Humans over the years have bred horses to be faster and stronger so they could be ridden faster and so that they could then be used in farming practices.

A group of diverse bacteria is exposed to a certain type of antibiotic. This antibiotic is not guaranteed to kill all of the bacteria because some have a natural resistance.