When voltage of a plasma membrane shifts from +30mV towards 0mV, we say cell is repolarizing. Repolarization results from the movement of positively charged K+ ions out of the cell. This repolarization phase of an action potential results in hyperpolarization, attainment of a membrane potential that is more negative than the resting membrane potential.
Answer:
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Speciation is not a mechanism of microevolution.
I believe this leads to allostatic load. Allostatic load is the cumulative biological burden exacted on the body through daily adaptation to physical and emotional stress. it is considered to be a risk factor for diseases such as obesity, coronary vascular disease, diabetes, .cognitive impairment, depression and inflammatory and autoimmune disorders.