Over the past several decades, natural selection has caused populations of
Staphylococcus aureus (a type of bacteria that causes infectious wounds)
to evolve resistance to most antibiotics. If antibiotic use were stopped,
what would you predict would happen to these S. aureus populations? *
m
O
They will go extinct without the antibiotic
O
The frequency of resistant forms will increase in these populations
The populations will begin colonizing new environments
The frequency of nonresistant forms will increase in these populations

is this for the e2020 class

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.