B1. To be effective, a certain drug must not drop below 15 mg in the body. A 120 mgs of that drug was administered to a patient. How much time will it take for
that drug to reach the 15 mg minimum level. The drug's half-life is 30 minutes.
(Show how you arrived at your response.) *
Your answer

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

its b. greenhouse gasses trap uv rays for heat so that the plants stay alive.