What happens when the spinal cord is injured? a. the parts of the body using the damaged areas lose sensation. b. the affected neurons in the cns regenerate gradually. c. the path of impulses in the nervous system may be disrupted. d. both (a) and (c).

the rocks are classified by the geological process they are formed by. the three main groups of rocks are igneous, metamorphic, and sedimentary. minerals are not they are classified under the chemical classes they are in. these groups include silicates, sulfates and carbonates.