What is this? Please answer with an explanation

B. Human disturbances

Explanation:

Human disturbances is an example of density independent factor. These human disturbances are actually caused by human activities that are carried out by people. These disturbances result to pollution, destruction of habitats, depletion of resources, urbanization, etc.

Density-independent factors are known to be the factors that influences the birth and death rate of the population. This happens regardless of the population density i.e it does not depend on population.

Some of these density-independent factors  are also food or nutrient limitation, climate extremes, pollutants in the environment, etc.

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- multicellular

b-eukaryotic

c-no cell wall

d-heterotrophic

e-autotrophic