What is measured by the amount of time a muscle group can sustain a contraction? A.
Muscular endurance
B.
Muscular strength
C.
Cardiovascular fitness
D.
All of the above

The media influences tobacco use by teens how? a) by showing beautiful, strong, and popular people using tobacco and cigarettes b) tobacco companies describing all the health effects of tobacco use c) cigarette businesses explaining all of the addictive qualities of tobacco use d) none of the above

Which of these is the muscular tube that leads from the mouth to the stomach? a.epiglottisb.uvulac.soft palated.esophagus

When studying heredity, what is the relationship of dna based and traits? super urgent !