The major difference between oxygen and ozone is: A.) The number of atoms in a molecule
B.) The kind of atoms they are made of
C.) The color of the gas
D.) One is a gas and the other is a liquid

A

Explanation:

The only difference is that ozone is made up of three oxygen atoms, while the stuff we breathe (molecular oxygen) is made up of only two atoms.

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 its through the fallopian tube