Energy release associated with rapid movement on active faults is the cause of most earthquakes. A fault plane is the plane that represents the fracture surface of a fault. A fault trace or fault line is the intersection of a fault plane with the ground surface.
The average IQ of a teenager is 100. IQ tests take age into consideration, so the average score is always 100, regardless of a person's age.
A normal, healthy teenager will have blood calcium levels that are above 10.0, and most of the time these healthy normal teenagers have calcium levels between 10.0 and 10.7 mg/dl.