What puppy is cuter? First Puppy (Harper, the black one)- She is nice and is very smart! she is cute and loves to snuggle!
Second one (Wynne) -- She is a bratt, but she is cute. When she doesnt want to snuggle she will scream.. so all the time. Once you get to know her she isnt that cute. She bites A LOT, but her little legs make up for it.

both:D

Explanation:

where is the other puppy? :(

Explanation:

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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well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."