A Researcher Is Studying Biological Rhythms Such as the Waxing

question 66

Multiple Choice

A researcher is studying biological rhythms such as the waxing and waning of hormone levels,urine volume,blood pressure,and responsiveness of brain cells to stimulation.In particular,she is interested in the endogenous nature of these rhythms,or to put it another way,the researcher is interested in understanding how these biological rhythms are

• A)generated by an internal biological clock.
• B)influenced by our environment.
• C)produced by our heart's rhythm.
• D)determined by an individual's experience and therefore vary from person to person.

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