When a male with normal color vision reproduces with a female who is a heterozygous for the color-blind allele, the phenotypic ratio of their
offspring will be:

Gay-lussac's law i think.

Air enters through the nose (and sometimes the mouth), moves through the nasal cavity, the  pharynx, the  larynx, enters the  trachea, moves through the  bronchi  andbronchioles  till the alveoli.

It might. it might because if you think about if they discovered if we came from (lets say something funny like aliens) and thy found cells that matched and they would have t do more research about it but would most probably change their theory.