To study the dependant variable, a scientist must
a. manipulate the independent variable
b. have more than one control group
c. manipulate the dependent variable
d. have more than one experimental group

The skin includes multiples layers. which of the following is not one of the layers of the skin?

For several reasons you should only use hospital approved hand lotion two of the reasons are because they cause breakdown of latex gloves and can become contaminated with bacteria if dispensers are refilled what is another reason

Sarah’s friend had been binge drinking and was intoxicated. sarah immediately called 9-1-1