Excessive sun exposure is a common cause of brown spots on the scalp due to conditions such as melasma and actinic keratosis, per the Mayo Clinic and the American Academy of Dermatology. While these conditions differ slightly from each other, they both are frequently caused by excessive ultraviolet radiation. Continue Reading.
Mexico is a part of North America. Maybe you are thinking of Northern America, which is a tricky area as sometimes Mexico is included and sometimes it is not. Northern America â¦ is the northern portion of North America, in which Canada and the United States are usually the two sole members.
Mexico is in Latin America. Latin America is the Americas (including the Caribbean) with the exception of Canada, the US, Guyana, Suriname, and Guyane (French Guiana). Mexico â¦ happens to be in that part of Latin America that is also on the continent of North America.ore precisely, it refers to those countries in North and South America (including the islands of the Caribbean) where Spanish or Portugese is spoken, and therefore excludes a number of countries such as Jamaica and Surinam. See the Wikipedia entry Latin America for a complete list of these countries.