Is vaping a positive or negative feedback? taking nicotine over and over is a feedback loop.

After a long period of withdrawal your brain will reduce the receptors on your neurons back to how they were before addiction. This is an example of feedback loop.

coal is not sustainable because it will one day run out.

the framers of the constitution insisted that federal judges be nominated instead of elected due to their desire to have judges above the shifting whims of the masses.

the hope, whether achieved or not, was that federal judges would only be beholden to the law and that by not having judges be elected, they would be protected if that law dictated an outcome that ran counter to popular opinion.