How many amino acids are considered "essential" because they cannot be made by the body and must be supplied by food? 

During a structural search, firefighters should monitor radio traffic for:

A. changes in orders. B. PASS device instructions. C. building plan layout changes. D. personnel accountability reports.

The employer identification number (EIN) or federal tax ID number is issued by:

the Centers for Medicare and Medicaid Services (CMS). the Internal Revenue Service (IRS). the Health Insurance Portability and Accountability Act (HIPAA). insurance carriers.