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dtaz123 dtaz123
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6 years ago
Caffeine is one of three naturally occurring compounds known as the __________.
 
  a. theobromines
  b. methylxanthines
  c. endorphins
  d. tricyclics
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BRaines92BRaines92
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6 years ago
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dtaz123 Author
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6 years ago
You make an excellent tutor!
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Yesterday
I appreciate what you did here, answered it right Smiling Face with Open Mouth
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2 hours ago
This calls for a celebration Person Raising Both Hands in Celebration
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