Examine the map above showing the acidity of rainfall across the usa. how might the distribution of the acidity be explained?

a.

the acidity of the rain decreases over the western half of the country because there is less rainfall there.

b.

the acidity of the rain increases over the eastern half of the country because evaporated water from the atlantic ocean affects the air's ph.

c.

the acidity of the rain is directly related to the amount of forested land in each region.

d.

the acidity of the rain increases over highly populated, highly industrial regions because of the accumulation of waste products in the air.

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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i think the miocene epoch spans the time from 23 million to 12 million years ago.

well, you see. the answer to your question is quite simple. the thing that is big, powerful, and over 9,000 is your mom.

there are 35 white marbles

step-by-step explanation:

y- yellow marbles

4y + 5 = 45

subtract 5 from both sides

4y = 40

divide for from both sides

y = 10

plug in 10 to get 40 yellow marbles then subtract by 5 to get 35 marbles

thus there are only 10 yellow marbles