What is defined as all biological, or living, components within an ecosystem?

The term that describes all biological, or living, components within an ecosystem is best represented by "Biotic community." This concept encompasses the various organisms, such as plants, animals, fungi, and microorganisms, that interact within a given area.

In an ecosystem, living components play critical roles in interactions such as predation, competition, and symbiosis, which contribute to the structure and function of that ecosystem. The biotic community is essential for understanding how energy flows and nutrients cycle through the environment, highlighting the intricate relationships among different species.

While "Community" is a close synonym and refers generally to any group of different species living together, "Biotic community" specifically emphasizes the living organisms. "Population" refers to a group of individuals of the same species living in a specific area, and "Ecosystem" encompasses both the living (biotic) and non-living (abiotic) components, including climate, soil, water, and nutrients, creating a broader context than what is meant by merely the living components alone. Thus, "Biotic community" is the most accurate term for describing solely the biological components within an ecosystem.