Multiple Choice
The virulence of a pathogen is not fixed, meaning that
A) pathogens can't evolve to become more virulent.
B) pathogens can evolve to become more or less virulent.
C) all species of pathogens do not have the same virulence.
D) virulence can vary among species but not within a species.
Correct Answer:
Verified
Correct Answer:
Verified
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