Based on this food web, which organism occupies multiple trophic levels? f) Canada goose
g) Eastern cottontail
h) Loggerhead sea turtle
i) Sand dollar

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.  

d we did this already

a bird that nests only in a particular tree species.

i think your answer is a. it splits a cell into two new daughter cells. the others don't really make sense to me so i would go with that one.