Answer: Decreased oxygen use
Step-by-step explanation:
The physiological adaptation are internal systemic responses to the external stimuli. This is a type of behavior which helps the organism's homeostasis.
The adaptations can be defined as the activities that helps an organisms to survive in the natural habitat. These behavior can be learned or these can be instinctive in case of physiological adaptation.
Decreased oxygen use is one of the physiological adaptation in which the body uses less oxygen than normal as a adaptation.