To score in the 85th percentile at age 15 in the president's challenge, girls must a. complete the shuttle run in 9.0 seconds b. run a mile in 8: 08 c. complete 11 pull-ups d. perform 57 curl-ups in 60 seconds

Abanana can be an excellent source of potassium in our diet. there is a naturally occurring, long-lived, radioactive isotope of potassium, 40-19k, which has a natural abundance of 0.0117% and a half-life 1.27 billion years. estimate the activity of a typical banana due to this potassium isotope assuming that most of the mass is in stable potassium.

Which describes the effect of prolonged stress on blood pressure? it causes blood pressure to decrease. it has little or no effect on blood pressure. it causes the heart to pump with more force. it causes blood pressure to increase.

When you have proper posture, your back is arched. a. true b. false