Comedones may be closed or open. A closed comedo has an obstructed opening to the skin and may rupture to cause a low-grade skin inflammatory reaction in the area. The common name for a closed comedo is a whitehead. An open comedo has a wide opening to the skin and is capped with a blackened mass of skin debris. It is commonly known as a blackhead. Acne occurs when sebaceous glands of the skin begin to secrete oil during puberty.
Guam is an island in the western Pacific Ocean. It is a U.S territory officially known as the Territory of Guam. The official languages are Chamorro and English (influenced by U.S).
Guam is the largest and southernmost of the Mariana Islands, and the largest island in Micronesia. Guam is one of the 17 Non-Self-Governing Territories under supervision of the Special Committee on Decolonization of the United Nations, whose goal is to bring the colonization to an end.uring the occupation, the people of Guam were subjected to acts that included forced labor, torture, beheadings, and rape, and were forced to adopt the Japanese culture. Guam was subject to fierce fighting when U.S. troops recaptured the island on July 21, 1944, a date commemorated every year as Liberation Day.