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Answer: The correct answer is (D) Both A and B
Explanation:
When an axon is depolarized at halfway to the threshold level,the action potential will be generated that would travel 'downstream' i.e towards the synapse and 'upstream' i.e back towards the cell body. This is because both channels on either sides are not under refractory period,i.e they are open.
it is hurtful, sometimes just like in words like they don't know. but know that you are more than your appearance.so we shld use those words to build someone up and not to pull them down.
The organization that is responsible for the food labels is the Food and Drug Administration.
I hope this helps.