What conclusion can be drawn from the data presented in the first paragraph about the Chernobyl disaster?

A-Contamination increases the rate of
radioactivity.
B-Cancer rates always increase.
C-Nuclear power is not very safe.
D-Radioactivity can lead to an increase in
cancer.
.

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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some scientists like gregory adcock agree with thorne's theory of regional continuity.

others, like chris stringer and ian tattersall, believe thorne's results may be contaminated or misinterpreted.