The diagram represents a model of how bacteria become resistant to an antibiotic, allowing bacteria
to survive treatment.
a. genetic mutations that promote resistance occur.
b.
the bacteria are infected by viruses that confer resistance.
c.
alleles for antibiotic resistance become dominant over recessive alleles.
d.
a portion of the genetic material is re-replicated, allowing for resistance.

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?

yo

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.