A steady state of an ORN has some interesting properties. First, it can exhibit adaptive ability. As mentioned earlier, all the involved irreversible reaction and diffusion processes including inflows of source substances and outflows of reaction products in a steady state of an ORN have attained a full balance and are fused into unity; that is, they are continuously connected with each other. Thus, a steady state of an ORN is in a dynamic harmonious state with the environment.