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densk [106]
3 years ago
6

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

Biology
1 answer:
Gnoma [55]3 years ago
7 0
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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