The study of the interaction of organisms with each other and their environment involves non-living factors, also called and living factors, which are referred to as

The study of the interaction of organisms with each other and their environment involves non-living factors, also called abiotic factors, and living factors, which are referred to as biotic factors.

This study called ecology focuses on several things about the ecosystem, which is a group of organisms interacting with each other and their environment. Ecology is a very broad field that encompasses the study of everything concerning the the world's inhabitants and how they behave in their surroundings. 

Probably a behavioral adaptation