What does it mean for a chemical equation to be balanced?
a. the number of atoms is the same for both the reactants and products.
b. the number of each type of atom is the same for both the reactants and products.
c. the number of different molecules has to be the same for both the reactants and products.

b. The number of each type of atom is the same for both the reactants and products.

Explanation:

A balanced chemical equation is characterized by each of the atoms of the reactants and the products being equal to each other. The atoms present in the reactants are also present in the products but are just rearranged. The equal number of atoms from both sides of the equation (reactants and products) follow the Law of Conservation of Mass.

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.