Liquid water absorbs energy from the sun. some of the molecules on the surface gain enough energy to break away into a gaseous state. what process is described here? a. evaporation b. condensation c. precipitation d. transpiration

Evaporation (choice A) is the only answer that makes sense in the context of the question.

Explanation:

The line, "Some of the molecules on the surface gain enough energy to break away into a GASEOUS STATE," reveals the answer in that it notes how the water turns into a gas -- just like it does in the evaporation stage of the water cycle.

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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