Achange in the gene pool of a population due to chance

Which best explains how this maneuver unblock a person's airway?

Hey me with this one❤❤❤❤ every organism needs food. does a cell also need it? explain very briefly.

1. which of the following is correct regarding opiates/opioids: a. they all have a natural component as a starting pointb. they have low addiction possibilitiesc. methadone binds to some of the same receptorsd. a and care correcte. all are correct