1. What was the change in the percentage of teens who used marijuana or hashish between 2001 and 2002?
A. From 20.4 percent to 19.2 percent
B. From 29.2 percent to 30.0 percent
C. From 34.5 percent to 31.6 percent
D. None of the above

During weight training, when should you exhale? (hope) a. on the lift b. on the recovery c. before the set d. after the set

A72-year-old woman fell in her bathtub and fractured her hip. in viewing the fracture, x-ray revealed osteoporotic changes in her bone as well. after reduction of the fracture, and immobilizing the bones with internal pins, what type of exercise would the doctor have advised her to do as soon as she was able in addition to prescribing calcium supplements to improve her bone mass?

During polarizacion potassium has a blank charge sodium has a blank charge and calcium has a blank charge