4. what is the tough, clear outside covering of the hair shaft?

answer:

the cuticle is the transparent outer layer of the hair shaft

explanation:

teachersinstitute.yale.edu

hope this : )

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.

a is the best answer your welcome