A bog is a wetland that...

A) is entirely covered with thick floating mats of vegetation

B) has shallow water and tall grass like plants

C) has shallow water and Woody shrubs and trees

D) has mostly salt water

(please no guesing)

A) is entirely covered with thick floating mats of vegetation

Explanation:

The bog vegetation, mostly sphagnum moss anchored by sedges (such as Carex lasiocarpa), forms a floating mat approximately half a meter thick on the surface of the water or on top of very wet peat.

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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the correct answer is d