How are green algae related to land plants? (Select all that apply.) both have chloroplasts
both lack a cell wall
both have a cell nucleus
both lack a cell nucleus
both have a cell wall

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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chemical because it warmed up which involves temperature and it bubbled which includes changing

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