What term means all populations in an ecosystem?

• A. Food Chain
• B. Detritus
• C. Community
• D. Habitat

Answer: (C)

The main idea is how we describe the living parts of an environment. The term that means all populations of different species living together in a place is community. It includes plants, animals, fungi, and microorganisms that interact in that area. This is distinct from an ecosystem, which also includes the non-living environment and processes like energy flow and nutrient cycles. For comparison, a food chain traces a single path of energy transfer among organisms, detritus is dead organic matter, and habitat is the physical place where an organism lives. So, the term that best fits “all populations in an ecosystem” is community.