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The Concept Map you are trying to access has information related to:
real systems, real systems e.g. Earth, real systems e.g. person(s), real systems e.g. school(s), real systems e.g. Universe, real systems e.g. ecosystem(s), changes in time indicates real existence, causal relationships between elements of the system indicate real existence, (part) World 1 has real systems, real existence have evolution, real systems have real existence