The tissue of the tooth made of blood vessels and nerves held in place by connective tissue is the ____

The ________ is (are) the final passageway for the flow of urine

a. ureters b. kidneys c. urethra d. urinary bladder

_____________ is a substance that has an effect on the skin shade of a person.

A. Keratin B. Melatonin C. Lymph D. Sebum