17. the
the number of offspring from a genetic cross, the closer the
resulting numbers will get to expected values.

Iwolud you, but i dont know what you are asking.

1. aspect is nothing really because the answer is right in front of your face

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.