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dtaz123 dtaz123
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6 years ago
When do the secretions of melatonin begin?
 
  a. just before a person awakens
  b. when body temperature is at its lowest
  c. when body temperature is at its highest
  d. a couple of hours before a person naturally falls asleep
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tdclarktdclark
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6 years ago
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dtaz123 Author
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6 years ago
Good timing, thanks!
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Thanks
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2 hours ago
This site is awesome
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