An ecosystem refers to the interaction of A. plants and animals B. animals among themselves C. living things and non-living things D. one plant on another

Here is the answer to the question:

27. An ecosystem refers to the interaction of

    • A. plants and animals
    • B. animals among themselves
    • C. living things and non-living things
    • D. one plant on another

    An ecosystem is defined by the interaction between all the living organisms (biotic components) in a particular area and their non-living physical environment (abiotic components).

    The correct option is C.

    $$\boxed{\text{C. living things and non-living things}}$$