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mcranfield mcranfield
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6 years ago
Over the past 150 years in the United States, the average age at which puberty begins has
 
  a. remained stable.
 b. risen.
 c. decreased.
 d. decreased for males but not for females.
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FanouseFanouse
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6 years ago
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mcranfield Author
wrote...

6 years ago
this is exactly what I needed
wrote...

Yesterday
Good timing, thanks!
wrote...

2 hours ago
Thanks
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