Curvatures of the spine serve the body by . A. limiting the flexibility of the spine and preventing hyperextension
B. applying greater pressure to the intervertebral disks
C. preventing them from slipping
D. giving additional springiness and flexibility to the spine which absorbs shock providing space for soft organs in the various body cavities

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

Under the soviet system, the government a. controlled all forms of communication. b. allowed newspapers to print whatever they wanted. c. controlled editorials but not the reporting of news. d. encouraged access to a wide variety of news sources. select the best answer from the choices provided a b c d

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone