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For a long time, penicillin was given to people to kill the bacteria which caused ear infections. Lately, some ear infections are not cured by penicillin. Which is the best explanation for this?
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For a long time, penicillin was given to people to kill the bacteria which caused ear infections. Lately, some ear infections are not cured by penicillin. Which is the best explanation for this?

User RecencyEffect
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1 Answer

6 votes

Answer:

Some bacteria have mutated and are not killed by the penicillin

Step-by-step explanation:

User Kenial
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