. What is the function of DNA?

The function of DNA is to make your body look how it's supposed to like if you have one blue eye gene in your DNA but one green eye DNA you would get green eyes unless it gets a mutation.

Explanation:

your answer is "the 1950's"

air enters through the nose, moves through the nasal cavity, the pharynx, the larynx, enters the trachea, moves through the bronchi andbronchioles till the alveoli.