How does the muscular system help humans maintain posture? 1.Muscles continually align themselves vertically to help maintain posture.
2.Muscles continually push bones to be straight.
3.Muscles constantly contract to help fight gravity.
4.Muscles constantly contract to help work with gravity.

Aboy jumps into a cold swimming pool and his body tempature goes down hus muscles ,blood vessels

2. if someone had the list of traits you provided in question 1, do you think he or she would be able to find you in a group of 1000 people? why or why not? if not, what other information encoded in your genes might distinguish you from the others in the group? what are other traits that are encoded for by dna?

Achange in which factor will affect the rate of reaction only when gases are involved? temperature pressure surface area concentration