The raphe system:
a. controls the sensory areas of the spinal cord.
b. is important for balance and coordination.
c. increases the brain's readiness to respond to stimuli.
d. regulates the rate of production of cerebrospinal fluid.

List two modern organisms that have pentameral symmetry

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots