Concept:An ecosystem includes both living organisms and their physical environment.
Explanation:The living part of an ecosystem is the biotic component, which includes plants, animals, and decomposers.
The non-living part is the abiotic component, which includes air, water, soil, sunlight, and temperature.
Together, these living and non-living factors interact to form an ecosystem.
Therefore, the complete set of components is simply living and non-living factors.
Answer:B. Living and non-living factors