The skin is made up of five layers: subcutaneous, dermis, collagen, melanin, and epidermis.
true
false

Drinking alcohol at a faster rate will not affect a body’s absorption of alcohol

This anterior tooth has a single root and sharp incisal edges. it has mamelons upon eruptions. this tooth is a a. maxillary central incisor. b. mandibular central incisor. c. mandibular canine. d. maxillary lateral incisor.

Second hand smoke can be almost as harmful as smoking. true or false?