Which description fits with the term biomass? Choose the correct answer. O the producer-to-consumer ratio in an ecosystem
O the mass of all living things on Earth
O the unused material excreted as waste in an ecosystem
O the mass of the living and dead organisms in a given area

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.  

read more on -