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 located in the nothern region of Ameraca. The neighboring countries that share border with mexico are United States in the northern region and Guatemala and Belize in the southern regi.exico is a country with diverse culture and ethnicity. Many people from Central and South America like Argentina, Peru, Brazil, Cuba and Venezuela have settled in Mexico. âPluricultural nationâ is the word used by the country's constitution to define the cultural diversity. Mexico City is the capital of Mexico.