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

An organ system consists of a group of organs that performs specific functions necessary for the survival of an organism. humans have eleven different organ systems: integumentary, skeletal, muscular, nervous, endocrine, circulatory, lymphatic, respiratory, digestive, urinary, and reproductive. discuss the function of neurons, the brain and the spinal cord within the human nervous system while explaining the interrelationship of each organ.

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers

Approximately what wavelength of light is best absorbed by chlorophyll a