The main food source for acne bacteria is:

Base sections are offset from each other row by row, to prevent noticeable splits, in which wrapping pattern?

Chemical reactions that are characterized by or formed by giving off heat are:

An unstable physical mixture of two or more immiscible substances is a(n):

A freckle is an example of a mark on the skin called a:

A closed comedo is also known as a blackhead.  

During a relaxer strand test, hair that is pressed to the scalp and continues to curl is:

A substance, usually liquid, that dissolves another substance to form a solution is a(n):

The oxidation of haircolor is an example of a physical change.

Most organic substances do not burn because they do not cotain carbon.