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Zina [86]
3 years ago
5

Why do you need only one polio vaccination, but a new flu shot every year?

Biology
1 answer:
nevsk [136]3 years ago
3 0

Answer:

The flu virus mutates

Explanation:

We need a new vaccine for each new strand of a flu virus

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Answer:

The correct option is;

True

Explanation:

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The correct answer: C) allows the behavior of microtubules called dynamic instability.

Explanation:

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