An ecological system is a –

A. Biological system
B. Biogeochemical system
C. Physicochemical system
D. Bioecological system
Answer» A. Biological system
Explanation: An ecosystem is a community of living organisms (plants, animals and microbes) in conjunction with the nonliving components oftheir environment (things like air, water and mineral soil), interacting as a system. These components are regarded as linked together through nutrient cycles and energy flows. They are biological system in the sense that they represent recurring groups of biological communities that are found in similar physical environments and are influenced by similar dynamic ecological processes, such as fire or flooding.
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