Dental decay, also known as dental caries, begins first inside the tooth. A white spot appears on the enamel where the tooth has started to weaken inside. At this stage, the tooth can repair the weakened area with the help of fluoride and minerals in saliva.
Beijing, also Peking, is the capital of the People's Republic of China and one of the most populous cities in the world. Its population in 2013 was 21,150,000. The city proper is the 3rd largest in the world.
Beijing is the capital city of the Republic of China. In the past it was known as Peking in English, lot of people are also confused because of the change of name.The Republic of China is divided into sixteen districts and two counties. After Shanghai, Beijing is the second largest city of the country.Beijing is very busy city and is the main point of numerous international flights to the Republic of China. Beijing is the main transportation area with loads of motorways, railways and roads. The capital city also hosted in 2008 the Olympic Games.eijing is very busy city and is the main point of numerous international flights to the Republic of China. Beijing is the main transportation area with loads of motorways, railways and roads. The capital city also hosted in 2008 the Olympic Games.