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inesxvii inesxvii
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Posts: 442
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6 years ago
Air entering the body is filtered, warmed, and moistened by the
 A) upper respiratory tract.
  B) lower respiratory tract.
  C) bronchioles.
  D) alveoli.



What is true regarding passive immunity?
 A) It provides lifelong protection.
  B) It lasts longer than active immunity.
  C) It is not permanent.
  D) It results from the administration of a vaccine.
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JodiLoveJodiLove
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6 years ago
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