Describe a specific type of chemical or audible communication used by animals to respond to an external stimulus and the resulting change in behavior. explain how this type of communication may relate to natural selection within a population.

Communication refers to a state when one animal conducts information to another animal making a certain type of modification in the animal, which acquires the information. Animals generally communicate using signals that may involve visual, auditory or sound based; chemicals involving pheromones, and others.

A pheromone refers to a discharged chemical signal used to stimulate a reaction in another individual of the similar species. Pheromones are generally common among social insects, like bees and ants. It is used to fascinate the opposite sex, mark a food trail, raise an alarm, or to stimulate other composite behaviors.

This kind of communication plays an essential role in natural selection. It helps in obtaining mates, establishing defending or dominance territory.

it's c. (to reduce the greenhouse effect/carbon gasses)