The absolute refractory period for a neuron is the time: Group of answer choices Between graded potential summation and when threshold is reached Necessary to break down the neurotransmitter molecules that have detached from receptors in the postsynaptic membrane It takes a stronger threshold to trigger/fire an action potential During which a second action potential cannot be triggered, no matter how strong the stimulus

2%? i tried finding the exact sorry if it's not 100% correct ; -;

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation:

nb

explanation:

kj

geographic isolation