Final answer:
In biology, the term population describes all individuals of a species within a specific area, distinguished from communities which encompass multiple populations of different species.
Step-by-step explanation:
The population refers to all the individuals of a particular species living within the bounds of a specified area. For instance, within a forest ecosystem, a population might consist of all the white pine trees present in that forest. This is distinct from a community, which is the sum of all such populations inhabiting a specific area, inclusive of a variety of species like trees, flowers, insects, and others.
At a grander scale, these communities interact with the abiotic factors like soil nutrients and water to form an ecosystem, and all ecosystems collectively make up the biosphere.