1. the food safety and inspection service (fsis), an agency within the usda, is responsible for ensuring the safety of

The United States' commercial supply of meat, poultry, and egg products and that they're correctly labeled and packaged.

the answer of "what has three legs but never walks" is a yard stick. this answer can be found at

pitch- the definition of pitch is as follows:

"the quality of a sound governed by the rate of vibrations producing it; the degree of highness or lowness of a tone."