What term describes a group of organisms of one species living in the same area?

The term that defines a group of organisms of a single species living in the same area is "population." A population comprises members of the same species that share a specific habitat and can interbreed. This concept is essential in ecology as it helps to understand the dynamics of species interactions, reproduction, and survival in a given environment.

In contrast, a community refers to different populations of various species that coexist and interact in a particular area. An ecosystem goes further to include not only the living organisms (the communities) but also the non-living environmental factors that influence them, such as soil, water, and climate. A biome represents a broader classification of ecological environments characterized by particular climatic conditions and the types of plants and animals that live there, such as forests, deserts, or grasslands. Each of these terms plays a crucial role in understanding ecological relationships, but "population" specifically focuses on individuals of the same species in a defined region.