★ Agents of Disease Quiz
Why do doctors suggest people get a flu vaccine every year?
A. viruses replicate more rapidly over time.
B. viruses can mutate from year to year.
C. vaccines are absorbed by the body after a year
D. vaccines get stronger over time.
Preview next quiz:
Which process uses a body cell to create a new organism?
A. crossbreeding
B. cloning
C. genetic modification
D. gene splicing
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