B because that would be the equal choice
Active transport is a process requiring energy in which a substance crosses the cell membrane. In a resting neuron, there are positively charged sodium ions outside of the cell, and negatively charged potassium ions in the cell. When the neuron fires, depolarization occurs=> the positive ions are forced in and negative ions are forced out by means of active transport. When the neuron is done firing, the ions are forced back into their original position inside or outside of the cell by active transport.
Let me know if I need to clarify any of that.
A the frenquency increases
Answer:
1)Species are separated from one another by prezygotic and postzygotic barriers, which prevent mating or the production of viable, fertile offspring.
2)Speciation is the process by which new species form.
3) It occurs when groups in a species become reproductively isolated and diverge.
Explanation:
