The typical state of a neuron is the potential, but when electrical signals stimulate it to its threshold, the is immediately observed.

The typical state of a neuron is the resting potential, but when electrical signals stimulate it to its threshold, the action potential is immediately observed.

Explanation:

The capacity for rest shows what occurs when a neuron is at rest. A capacity for action takes place when a neuron passes information down an axon, far from the cell body. When depolarization exceeds approximately -55 mV a neuron can activate the capacity for action.

Sodium-potassium valves start moving two potassium ions within the cell as three sodium ions are poured out to keep the negatively charged membrane within the cell; this keeps the resting potential in place.

the answer for apex is "1 and 6"

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.