By asking permission and informing the patient of the purposes of a photo, one is acting according to the ethical principles of ________ and ________

All of the salivary glands secrete ________ through openings into the mouth

a. pus b. blood c. saliva d. bile

________ molecules are the most abundant gas molecules in the air we breathe

A) Hydrogen B) Carbon dioxide C) Oxygen D) None of the above