Concept:The combined living (biotic) and non-living (abiotic) components of an environment form an ecosystem.Explanation:Biotic factors include all living organisms such as plants, animals, and microorganisms.Abiotic factors include non-living elements such as water, temperature, sunlight, and soil.The term that describes both these sets of factors together in an organism’s environment is the ecosystem.Therefore, the correct option is C: ecosystem.Answer:Ecosystem