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Home Q & A Board Science-Related Homework Help Psychology
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kitty kitty
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6 years ago
Free-running periods of sleep-wake cycles are
 
  A) the pauses between free-running cycles.
  B) invariably lengthened by zeitgebers.
  C) invariably shortened by zeitgebers.
  D) usually longer than 24 hours.
  E) usually shorter than 24 hours.
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dc0063dc0063
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6 years ago
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kitty Author
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6 years ago
Thanks
patyfeitosa
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Yesterday
Good timing, thanks!
Lourd Jenkins
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2 hours ago
Helped a lot
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