The tongue is a mass of muscle tissue with projections called ____

Red blood cells make up approximately ________ percent of whole blood volume

A) 45 B) 60 C) 30 D) 15

Which of the following organizations develops testing processes that other testing organizations use in the development of safety products?

A. ASTM International B. Standards Council of Canada (SCC) C. Underwriters Laboratories, Inc. (UL) D. American National Standards Institute (ANSI)