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RUNNER84 RUNNER84
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6 years ago
Symptoms of a common cold, such as runny nose and sore throat, most directly result from
 
  a. attachment of virus particles to the mucosa of the upper respiratory tract.
  b. cell death in the lining of the nose and throat.
  c. the body's attempts to defend against the infection.
  d. general stress and social isolation brought about by having an infection.
  e. psychological conditioning based on previous infections.

Question 2

How is respiration controlled in humans?
 
  What will be an ideal response?
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zika123zika123
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6 years ago
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This verified answer contains over 180 words.
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RUNNER84 Author
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6 years ago
Smart ... Thanks!
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This site is awesome
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2 hours ago
Brilliant
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