What do interval workouts usually involve? a. a steady cardiorespiratory workout over time. b. a combination of running, swimming, jumping, and stretching. c. sets of rapid exercise which get progressively shorter. d. sets of rapid exercise which get progressively longer.

Occurs when the immune system attacks the body. lupus cancer sickle cell disease huntingtons disease

What do you generally see in a family when both parents are working?

*edit* i took the test and i picked a and it was incorrect for its c! rank the following suggestions for preventing std, in order of increasing effectiveness. 1) using latex condoms properly 2) using spermicidal foam or jelly with a monogamous partner 3) abstaining from sexual intercourse and genital contact a. 1, 2, 3c. 2, 1, 3