How many different languages are there in the world?

Jessica considers herself to be a private individual. Although she is taking college courses and working toward her degree, she doesn't enjoy interacting with her fellow students very much

In order to minimize interactions in the classroom, Jessica should ________. a) spend as much time as possible interacting with the instructor b) sit at the front of the room and near the center of a row whenever possible c) sit in the back of the room, and either in a corner or at the end of a row whenever possible d) make frequent eye contact with her fellow students in order to indicate her lack of interest

Dr. Stephenson wants to investigate whether children who eat a lot of processed sugar find it more difficult to sit still and concentrate in school than children who don't. She randomly divides all the children in the Edward L. Thorndike Elementary School into two groups. Group one is given a breakfast of Chocolate Frosted Sugar Bombs cereal and chocolate milk, and a midday snack of Jolt Cola and

Crunchy Sugar Granola Chews. Group two is given an identical breakfast and snack, but their food contains artificial sweeteners instead of processed sugar. Dr. Stephenson records the behavior of each group of children on these diets for one month and compares them statistically. In this experiment, Dr. Stephenson's experimental group is the A) children's behavior before and after their breakfasts and snacks. B) type of sweetener used in the children's breakfasts and snacks. C) children in group one. D) children in group two.