[balrog666]

They do not ‘become’ resistant, they ‘are’ resistant regardless if you expose them to antibiotics or not – and if this resistance was not present they would all obviously die once exposed regardless if mutagens were present.

How many ways can you spin the obvious? One bacterium starts as nonresistant, it is allowed to breed and mutate, some in later generations become resistant, which part do you not understand?

[Heartlander]

It does not ‘become’ resistant… It ‘is’ resistant or it dies. Do you understand?

To say bacteria somehow ‘selects’ due to its environment is not purely natural. It is resistant or it is not resistant – that is all.