D because trachea is the tube, bronchi is what splits into your lungs, bronchioles are what look like branches of the bronchi, and alveoli are the little air bags at the bottom of the smallest bronchioles.
You usually start off with twenty baby teeth. If she is losing four each year you would divide the amount of baby teeth by four: 20/4=5 So she lost all her teeth by Five years of age.
a punctured wound can be MORE proan to infection if the thing thst punctured it was infected such as rust or iluminum aloids. Thanks and could really use brainliest