The non-genetic biological changes of an organism in response to challenges in its ENVIRONMENT.

Synonyms: Adaptation, Physiological, Physiological Adaptation, Physiologic Adaptation, Plasticity, Adaptive, Adaptive Plasticity, Adaptations, Physiological, Physiological Adaptations, Adaptations, Physiologic, Phenotypic Plasticity, Physiologic Adaptations, Adaptation, Physiologic, Plasticity, Phenotypic