Which process removes toxic waste products from the body using a machine?

Mineral fibers that can endure conditions that might exist in parking facilities have a density greater than ___ lbs/cu ft

A) 20 B) 30 C) 40 D) 50

Which of the following is a pigment that gives a yellowish color to the skin?

a. Melanin b. Carotene c. Hemoglobin d. Corium