Which of the following is an accurate definition of carrying capacity?
a. the amount of water that a stagnant body of water can hold.
b. the number of individuals that a habitat can sustain with the resources that it has available.
c. the number of predators that an ecosystem can support.
d. the amount of blood that a mosquito can take in and still fly.
e. the sum of all of the density independent factors in a population.

B. The number of individuals that a habitat can sustain with the resources that it has available.

Explanation:

A carrying capacity is the number of individuals of the population belonging to a particular species that an habitat or region or ecosystem can support or sustain in terms of providing the resources. If the population exceeds over the carrying capacity then this results in decline in members of the population.

According to the above description the accurate definition of carrying capacity is B.  

the cytokine-activated janus kinase (jak)-signal transducer and activator of transcription (stat) pathway has an important role in the control of immune responses. dysregulation of jak-stat signaling is associated with various immune disorders.