The humoral immune response depends on which cells?
tc cells
b cells
b and th cells
tc and th cells

The correct answer is option B cells.

Explanation:

The humoral immune response is regulated by the extracellular fluids like antimicrobial peptides and proteins antibodies released by the white blood cells. B cells receive signals from the BCRs bind to antigen.

B cells are the cells that regulate humoral immunity response by producing antibodies and releases other components in the cells.  

Thus, the correct answer is option - b cells.

true is the answer : )

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.