Nonpolar amino acid residues are typically found in the interior of globular proteins like chymotrypsin. which chemical force is most directly responsible?

The chemical force most directly responsible in the given case is hydrophobic interactions.  

The hydrophobic interactions illustrate the associations between the hydrophobes, that is, low water-soluble molecules, and water. Hydrophobes are nonpolar molecules and generally exhibit a lengthened chain of carbons, which do not associate with the molecules of water.  

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

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.