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).
Within Japan, Okinawan is often not seen as a language unto itself but is referred to as the Okinawan dialect (æ²ç¸æ¹è¨, Okinawa hÅgen) or more specifically the Central and Southern Okinawan dialects (æ²ç¸ä¸­åé¨è«¸æ¹è¨, Okinawa ChÅ«nanbu Sho hÅgen) . Okinawan speakers are undergoing language shift as they switch to Japanese.Language use in Okinawa today is far from stable. Okinawans are assimilating to standard Japanese due to the standardized education system, the expanding media, and expanding contact with mainlanders.kinawan is sometimes grouped with Kunigami as the Okinawan languages, however some linguists don't use this grouping or claim that Kunigami is a dialect of Okinawan.