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Home Q & A Board Biology-Related Homework Help General Biology
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bgarlipp bgarlipp
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6 years ago
Substance P _____.
 
  a. increases pain-related signals
  b. is a natural painkiller
  c. is the active ingredient in aspirin

Question 2

The middle ear functions in _____.
 
  a. detecting shifts in body position
  b. amplifying and transmitting sound waves
  c. sorting sound waves out by frequency
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Same.shaSame.sha
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6 years ago
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bgarlipp Author
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#2
6 years ago
White Heavy Checkmark Correct!
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