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Author Question: HIV is caused by A) a viral infection. B) a bacterial infection. C) exposure to a ... (Read 260 times)

appyboo

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on: Jun 21, 2018
HIV is caused by
 
  A) a viral infection.
  B) a bacterial infection.
  C) exposure to a cancer-causing agent.
  D) homosexuality.

Question 2

Which of the following most accurately explains the lack of a common cold vaccine?
 
  A) Every time a vaccine is developed, the common cold virus mutates.
  B) The common cold is a virus, and vaccines only work with bacteria.
  C) The common cold is caused by a great number of different viruses.
  D) Medical scientists do not find colds serious enough for vaccination.


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harveenkau8139

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Reply #1 on: Jun 21, 2018
Answer to Question 1

A

Answer to Question 2

C


appyboo

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  • Posts: 527
Reply 2 on: Jun 21, 2018
Gracias!

sultansheikh

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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