If you could magnify the surface of a leaf to see it up close what type of structures do you think you might see that could explain how gases get into and out of the leaves of the plant?

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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condensation. good luck!