What does the chemical formula (OH-) represent?

_______________________ are ideally suited to meet the fire protection demands associated with modern food processing and catering facilities

a. Heat-encapsulating agents b. Wet chemical extinguishing agents c. Dry chemical extinguishing agents d. Water extinguishers

The dorsal cavity contains which cavities?

A) Pleural and pelvic cavities B) Pelvic and pericardial cavities C) Cranial and spinal cavities D) Thoracic and abdominal cavities