Which of these is an advantage of an ultrasound over an x ray? a. it used more radiation. b. it's equipment needs it own room. c. it can produce images of soft tissue. d. it does not require training.

What is the main goal of recommended dietary allowances (rdas)? to inspect school cafeterias across the united states to regulate foods sold at supermarkets and farmers' markets to investigate claims of tainted food being served in restaurants to indicate daily nutrient requirements