The respiratory system is responsible for:? transporting materials (e. g., nutrients and oxygen) throughout the body.

breaking down large food into molecules that can be used by the cells of the body.

obtaining oxygen and releasing carbon dioxide.

producing movement of body parts.

obtaining oxygen and releasing carbon dioxide(gaseous exchange)

fabric is silk wool ext. paper isnt

explanation:

u cant make fabric out of paper cause paper comes from wood while fabric comes from animals

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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