What is defined as groups of individuals that belong to the same species?

The term that refers to groups of individuals that belong to the same species is population. A population consists of members of a single species that inhabit a specific area and interact with one another. This definition is essential in ecology and biology, as it helps scientists understand dynamics such as reproduction, competition, and resource utilization within a group.

Other options refer to different ecological levels. A species is a group of organisms that can interbreed and produce fertile offspring, but it does not specify a group in a defined area. A community encompasses all the different populations (of various species) that live together in a specific area, while an ecosystem includes the living communities and their physical environments, integrating both biotic and abiotic components. Thus, understanding that a population is specifically about individuals of the same species is crucial in recognizing the organization of life in various environments.