AP BIOLOGY

Detailed explanation-1: -Coevolution is the evolution in two or more species in which the evolutionary changes of each species influence the evolution of the other species. In other words, each species exerts selection pressures on, and evolves in response to, the other species.

Detailed explanation-2: -For that reason, the evolution of one species influences the evolution of species with which it coexists by changing the natural selection pressures those species face. The classic examples of this sort of evolution, called coevolution, are predator-prey and host-parasite relationships.

Detailed explanation-3: -Coevolution is commonly defined as reciprocal evolutionary changes brought about by interactions between species, implying that interacting species impose selection on each other. The covariance between fitness and trait value determines the strength of natural selection.

Detailed explanation-4: -Coevolution is one of the primary methods by which biological communities are organized. It can lead to very specialized relationships between species, such as those between pollinator and plant, between predator and prey, and between parasite and host.