Which of the following changes should be implemented to achieve sustainable farming while also protecting the environment?

tilling the ground to remove weeds and create uniform crops

clearing land for agriculture by cutting down trees instead of burning them

growing the same crop in a given field each year to improve efficiency

using predatory insects to control pests that destroy crops instead of pesticides

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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condensation. good luck!