How does llfe depend on the sun

Photosynthesis: Oxygen and Food Another way energy is harvested by the sun is in the form of photosynthesis. This process is done by plants and other autotrophic organisms and is essential for all life on Earth. Photosynthesis involves sunlight being converted into glucose, a by-product of which is oxygen.

Explanation:

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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