8). The total relief of the ocean surface (not counting waves or tides) is only about 1.5 meters, but this is sufficient to drive the ocean circulation. To understand how the wind stress distorts sea level, with hills at the convergences, valleys at the divergences, one needs to invoke the hydrostatic relationship.
Certain factors can exacerbate the patches of dry skin that develop around your mouth. This includes frequently licking your lips, according to NetDoctor. If you live in a cold climate, cold weather can dry the skin, causing patches to develop on the lips.
Lip rashes (and rashes around the mouth) can be caused by various factors. Herpes simplex virus (HSV I and HSV II) is a common cause of rashes around the mouth and lips. The specific lesions cause by HSV are called cold sores or fever blisters. Impetigo is common bacterial infection that also can cause a rash on the face, often affecting the mouth and lips. Oral thrush (overgrowth of yeast in the mouth) can also cause lip irritation. Most dermatologists will easily be able to diagnose these types of lip rashes that are caused by pathogens.