What is the term for the living things within the biosphere?

The correct answer is “ecosystem” because it encompasses all living things, along with their physical environment, within a specific area. An ecosystem includes not just individual organisms, but also the interactions among diverse communities of plants, animals, and microorganisms, as well as the abiotic components like soil, water, and climate that support life. This term highlights the interconnectedness of all living organisms and their environment, making it a comprehensive way to describe the living components within the biosphere.

Population and community refer to specific arrangements of organisms; a population is a group of individuals of the same species, while a community includes different populations living together in a certain area. The term organism refers to a single living entity, which again does not capture the full complexity of relationships and environmental factors present in the biosphere. An ecosystem is the broader concept that integrates all these elements, thus correctly defining the term for all living things and their interactions within the biosphere.