Rocks containing have magnetic properties

Chris would like to conduct a study on the effectiveness of a new substance-abuse treatment program. he has a sample of participants go through the program and he uses as a comparison group people who did not volunteer for the program but were eligible. chris has used a(n) design for his study.

Describe the cultural component "innovation." give two examples. give an example of the cultural component "cultural universals."

What is one property that water and oil do not share