A biologic+ a w y that quantifies hazardous response in living matter to an electromagnetic stimulus, is evolved. Considering the various susceptible aspects of physio-anatomical systems constituting a living subject, a dominance criterion to determine an optimum all-or-none response limit of exposure to electromagnetic pollutions is established. Based on the statistics of proneness and susceptibility of discrete physio-anatomical parts of living syetsms (biotic components) to polluting radiations (abiotic environment), the stochastic nature of damage involved is considered to formulate a quanta1 index which specifies a "safe" intensity-level of electromagnetic radiation to which living systems can be exposed without encountering any deleterious effects. The locations of vulnerable parts which are affected by radiation are identified through random mosaic modeling of a test subject. using this model, 8 suscephnce priority sequence of biotic components is constructed. This sequence is then terminated at a point of weightage proportional to the diversity of victim population. The biotic species falling within this limit of truncation are subsequently studied to assay the tolerance (optimum lethal dose) of the test subject to the radiation in question. The possibility of simulatbg the entire ecological system under consideration by means of a microprocessor is suggested.

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