Final answer:
All populations living in a particular area form a community. The correct order for ecological levels of organization is Population, Community, Ecosystem, and Biosphere.
Step-by-step explanation:
The term for all populations living in a particular area is referred to as a community. A community in biology is an interacting group of various species in a common location.
For example, a forest of trees and undergrowth plants, inhabited by animals and rooted in soil containing bacteria and fungi, constitutes a biological community.
When considering the ecological levels of organization, the correct order is Population - Community - Ecosystem - Biosphere. This sequence elucidates the progression from the most specific (population) to the broadest level of organization (biosphere).
A population is a group of individuals of the same species living in a specific area. A community includes all the different populations in that area.
An ecosystem includes all the living things (plants, animals, organisms) in a given area, interacting with each other, and with their non-living environments (weather, earth, sun, soil). The biosphere is the global ecological system integrating all living beings and their relationships.
Learn more about Ecological Levels