Which antibiotic can be used against several anaerobic organisms? which antibiotic can be used against several anaerobic organisms?

Metronidazole i.e carbapenems.

Explanation: Antibiotics that tends to be effective in treating anaerobic bacterial infections are metranidazole the carbapenems. This antibiotic is usually reserved for treating multiple drug resistant bacteria becase it able to fight off high-risk infections. It works by inhibiting bacterial cell wall synthesis, using a mechanism similar to that of penicillin.

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.