| Area | | Land: 148.94 million sq km | | Water: 361.132 million sq km | | Total: 510.072 million sq km | | | 70.9% of the world's surface
is water and 29.1% is land. | | | | Area - Comparative | Land area about 16 times
the size of the United States | | | | Elevation extremes | Lowest point:
Bentley Subglacial Trench
-2,540 meters | | | Highest point:
Mount Everest
8,850 meters | | | Challenger Deep in the Mariana Trench is the lowest ocean point, lying 10,924 meters below the surface of the Pacific Ocean. | | | Population (July 2011 estimate) | | 6,928,198,253 | | | Age structure (2011 estimate) | | 0-14 years: 26.3% | | 15-64 years: 65.9% | | 65 years and over: 7.9% | | | Median age (2009 estimate) | | Male: 27.7 years | | Female: 29 years | | | | Life expectancy at birth (2011 estimate) | | Male: 65.21 years | | Female: 69.05 years | | Total population: 67.07 years | | | Internet Users (2010) | 2.1 billion | | | Labor force by occupation | | Agriculture: 36.6% | | Services: 41.9% | | Industry: 21.5% | | | Languages (2009 estimate) | | Mandarin Chinese - 12.44 | | Spanish - 4.85% | | English - 4.83% | | Arabic - 3.25% | | Hindi - 2.68% | | Bengali - 2.66% | | Portuguese - 2.62% | | Russian - 2.12% | | Japanese - 1.8% | | Standard German - 1.33% | | Javanese - 1.25% | |
