The structure in the breast where milk is produced, where the hormonal and nutritional exchange occurs, and where the majority of breast cancers arise is the .

The response is mammary epithelial cells

Explanation:

Milk is produced by mammary epithelial cells. Moreover, breast cancer cell lines derived from mammary epithelial cells have also been used to show the association between aberrant gene expression patterns and the tumorigenic status

because they equal life

explanation:

eating disorders is a fatal illnesses that cause severe disturbances to a person's eating behaviors. obsessions with food, body weight, and shape may also signal an eating disorder. common eating disorders include anorexia nervosa, bulimia nervosa, and binge-eating disorder.