How does the surface area of a rock affect the rate at which it weathers

The dissociation of the rocks at the surface of the Earth, by the activity of extremes of temperature, rainwater, and biological procedures is known as weathering. It does not comprise withdrawal of the rock substance. When the amount of the surface area in comparison to the volume enhances, the rate of weathering also upsurges.

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 -

yes it is weird but true