What makes bacteria dangerous when they undergo natural selection?

1)they are in hospitals and cannot be killed without a hazmat suit on

2)they can resist antibiotics and copy their genes to other bacteria to make people very sick

3)they are everywhere and in everyone and do not change over time so that we can defeat them with antibiotics

B

Explanation:

Natural selection creates an environment for the bacteria where only the strongest and most antibiotic resistant surve, which can make them very dangerous

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yes we can.   a lady urinates from her urethra.