Anais427
Anais427 Anais427
  • 28-04-2015
  • Biology
Answered

Which of the following is a relatively new disease? a. polio, b. smallpox, c. west nile virus, d. all of the above



Answer :

Аноним Аноним
  • 28-04-2015
the answer is c. west nile virus in about year 2012 it appeared and in 1937 there was a outbreak in africa.
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