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dillosunion dillosunion
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6 years ago
Which statement is true of sleep?
 
  a. Most of the night is spent in the deepest level of sleep (stage 4).
  b. One spends an hour or two at each stage in turn, spending the last few hours at stage 4 and then at REM.
  c. One passes through all stages of sleep, including REM, several times in a normal night.
  d. One goes through stages 1, 2, 3, and 4, in order, then alternates randomly between stages 1, 2, and 3.
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julieh2180julieh2180
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6 years ago
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dillosunion Author
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6 years ago
This helped my grade so much Perfect
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Yesterday
Good timing, thanks!
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2 hours ago
Smart ... Thanks!
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