Antibiotic treatment of human diseases caused by pathogens becomes ineffective over time. It is necessary to search

Antibiotic treatment of human diseases caused by pathogens becomes ineffective over time. It is necessary to search for new drugs. Explain why

1) as a result of mutations, individuals with altered properties appear
2) antibiotic resistance is a beneficial trait for microorganisms and is supported by natural selection
3) microorganisms have a high reproduction rate, and the resulting beneficial mutations spread rapidly. A new population is soon emerging that is resistant to antibiotics

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