ELA.6.9A Compare and contrast the stated or implied purposes (e.g., inform, influence, entertain, express) of different authors writing on the same topic. ELA.6.10A Summarize the main ideas and supporting details in text, demonstrating an understanding that a summary does not include opinions.
The shape of the breast, its size, position of nipple and their numbers are also genetically determined. Any alteration in the basic genes or the presence of a predetermined gene that governs the shape and size of the nipples can cause the nipples to be inverted.
These highly sensitive body parts are both easily stimulated and easily irritated, and there are many reasons a person might find his or her nipples hurting from time to time. One of the most common (and easily cured) causes of nipple pain is wearing tight or ill-fitting undergarments and clothing. But nipple pain is also a problem for women who are pregnant or breastfeeding. In addition, sore nipples can be caused by infection, certain kinds of breast cancer and other conditions.