Which of these is an environmental benefit of converting to solar energy? O A. an increase in the use of fossil fuels
O B. a decrease in air pollution
O C. an increase in the cost of energy
O D. a decrease in electrical energy production

The answer is B. a decrease in air pollution.

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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i think that it is plants