Think about earths ocean as one subsystem within the larger earth system. Describe at least two inputs and two outputs to the ocean subsystem. What are some interactions that the ocean has with other subsystems?

There are four subsystem of earth that includes lithosphere, hydrosphere, biosphere and atmosphere.

Ocean is included in hydrosphere and is one of teh largest subsytem in the earth. The two input and output to the ocean subsytem are as following:

some of the interaction of ocean with other subsytem are as following:

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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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