In an ecosystem in africa, lions are predators for zebras. the lion population increases, and they eat more zebras. this decreases the zebra population. what happens next?
a. the death rate of lions increases.
b. the lion population increases.
c. the birth rate of zebras increases.
d. the birth rate of lions increases.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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