—- blowing of the sun causes—currents in the water that flows like rivers, moving the — energy in water from place to place

A river current is the water moving in a river. Rivers flow from high points to lower ones and eventually down to a larger body of water. The force of gravity, which makes the water flow downward, creates river currents. A current is the steady, predictable flow of one fluid within the body of another fluid. Fluids are materials capable of flowing and easily changing shape. The most common natural fluid is water. River currents are influenced by the volume, or amount, of water flowing in a river; the river's steepness, called its stream gradient; and a riverbed's topography, including sand bars, basins, rocks, and dams.

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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