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physiological –adj. the science dealing with how living things operate
vary –v. to be different or to become different
physician –n. a medical doctor
anemia –n. medical a condition in which a person has fewer red blood cells than normal and feels very weak and tired
regulate –v. to control how something works
adapt –v. a change to behavior that makes it easier to live or produce something
colleague –n. a person you work with
manipulate –v. to be able to control and change as needed
