Both the consumption of alcohol and the ingestion of antianxiety drugs work to increase the activity of which is an inhibitory neurotransmitter.

Ingestion of antianxiety drug and alcohol will likely result to an increase of GABA or also known as the gamma Aminobutyric acid. It is the one responsible of neuronal excitability reduction in the nervous system of an individual and it plays a neurotransmitter in the CNS.

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.  

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves