physical immunity do not effect the boundary alphabet of increases to static
level_of_compressibility is tangible_physical_quantity. nonproliferation_of_wmd is static_situation. action_spectrum is unreifiable_function. single_base_mutations has unpredictable_effects_on_gene_expression doppler_effect is physical_phenomenon. aortic_arch_obstruction is illness. up_tick is increase. decreasing_level_of_dangerousness is decrease. phosphodiesterase_inhibiting_substance is tangible_thing. racial_immunity is natural_immunity.