The process by which two or more species change in response to each other is called coevolution.

Here's a breakdown:

* Coevolution: This describes a long-term, reciprocal evolutionary relationship between two or more species. As each species adapts to the other, they influence each other's evolution. This can lead to a variety of fascinating outcomes, such as:

* Predator-Prey Relationships: The predator evolves better hunting strategies, while the prey evolves better defenses.

* Mutualism: Both species benefit from their interaction, like the relationship between flowers and pollinating insects.

* Parasitism: The parasite evolves to exploit the host, while the host evolves defenses against the parasite.

Let me know if you want more information on any specific type of coevolution!