Answer the following question given this paragraph: 

A community is the biotic component of an ecosystem. It consists of the populations of all the species that live in the same area. Populations in communities often interact with each other. Community interactions are important factors in natural selection. They help shape the evolution of the interacting species. Types of community interactions include predation, competition, and symbiosis. You’ll read about each type of interaction in this lesson.


Q: Community interactions are important factors in what?


A:
natural selection