A specialized intermodal tank container which transports gases in high-pressure cylinders (3000 to 5000 psi) is known as a(n):

The practice of epidemiology is enhanced with a background in _______________ to provide a basic understanding of how a body works.

Fill in the blank(s) with the appropriate word(s).

Which of the following countries established Imperial Units?

A. United States B. France C. Great Britain D. Spain