Sleep stages are defined in terms of the. A. The amount of time spent sleeping
B. Length of restful sleep experienced
C. Occurrence of brainwave patterns
D number of dreams experienced

colorectal cancer may also develop from areas of abnormal cells in the lining of the colon or rectum. this area of abnormal cells is called dysplasia and is more commonly seen in people with certain inflammatory diseases of the bowel such as crohn's disease or ulcerative colitis.

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.