Fill in the blanks:

The world Population reached 6 billion in the year _______________ .

The world Population reached 6 billion in the year 1999.

Explanation

The world population has been rapidly rising since 1650. It approximately reached 500 million by the 1700s. Because of the constant technical advancement in the field of medical sciences and other allied facilities, the world population has been ever increasing since then. Because of the fall in death rates and the increasing birth rates, the population growth has shown only increasing trends. In 1999, it reached 6 billion and by 2011, it has crossed 7 billion.