The third molars or wisdom teeth generally come in around ages ________

Above ground pressure facility tanks are divided into two categories:

a. Bulk and non-bulk b. Below-ground and above-ground c. Cryogenic and corrosive d. Low-pressure and high-pressure

Which type of untreated pneumothorax is considered to be the most serious?

a. Spontaneous b. Tension c. Malignant d. Iatrogenic