The ocean floor is primarily oceanic crust, but it also includes the edges of the continent (continental margins). Although once thought to be featureless plains, there are many features that have been discovered on the ocean floor. Some of these features are associated with plate tectonics because they are caused by plate interactions at the boundary. Some of them can occur anywhere on the ocean floor and are not associated with plate boundaries.

The cross-section below shows the tectonic plates making up an ocean between two continents.
Match the features below with the locations indicated by the letters on the diagram above. (You may use the same location more than once.)
Divergent Plate Boundary
Subduction Zone
Mid-Ocean Ridge
Trench
Passive Continental Margin
Volcanic Ocean Island
Continental Volcanic Arc

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.  

geologic time scale (for gradpoint) =)