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 a country located in North America and is bordered by the United States to the north, Belize and Guatemala to its south, the Gulf of Mexico to its east and the North Pacific Ocean to its west. The country's total area is 1,972,550 square kilometers (761,601 square miles), or nearly 3 times the size of Texas.Its capital, Mexico City, is located in the south-central part of the country.he country's total area is 1,972,550 square kilometers (761,601 square miles), or nearly 3 times the size of Texas. Its capital, Mexico City, is located in the south-central part of the country.