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mcranfield mcranfield
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6 years ago
Based on research, it has been determined that the human circadian rhythm appears to be ____.
 
  a. shorter than 24 hours
   b. exactly 24 hours
  c. just over 24 hours
  d. closer to 28 hours
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estiee3estiee3
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6 years ago
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mcranfield Author
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6 years ago
Brilliant
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Yesterday
You make an excellent tutor!
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2 hours ago
this is exactly what I needed
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