<span>A. efficiency
The efficiency of a machine is the quotient of work output divided by work input.</span>
The generation of an action potential in a neuron requires the presence of<span> voltage-gated channels, which are </span><span> a class of transmembrane proteins that form ion channels that are activated by changes in the electrical membrane potential near the <span>channel.</span></span>
It is when the female body sheds it's uterine lining and it causes bleeding and oftentimes cramps and discomfort
Answer:
Dear kayla please come obediently for Gary's safety