What are the elements necessary to create fire in the model represented by the fire triangle?

The time required for plasma serum concentration levels of an absorbed and distributed drug to decrease by one-half is known as its:

a. Half-life. b. ED50. c. Max 50. d. Life 50.

What ethical principle can be used to justify the pain that might occur in drawing blood from a patient for a diagnostic test?

a. Nonmaleficence b. Benevolent deception c. Do no harm d. Double effect