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wqeywqorwerh wqeywqorwerh
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6 years ago
The majority of time during a typical night's sleep is spent in _________ sleep.
 
  a. Stage 1 NREM.
 b. Stage 2 NREM.
 c. Stages 3 and 4 NREM.
  d. REM
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tbh1227tbh1227
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6 years ago
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wqeywqorwerh Author
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6 years ago
You make an excellent tutor!
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Yesterday
Brilliant
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2 hours ago
this is exactly what I needed
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