There are many types of significant lines in blueprint reading. which line defines the walls and surface boundaries of prints?

Thick Continous Lines

Explanation:

In blue print reading, there are many types of significant lines with unique meanings and usages.

The thick continuous line is used to represent surface boundaries or solid objects.

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.

double the distance = divide strength by 4