Although the Earth’s hemispheres are equal in geographic size, the Earth’s population is not divided similarly. Roughly 90% of Earth’s human population lives in the Northern Hemisphere, which also accounts for most of the planet’s landmass. The Northern Hemisphere is made up of 39.3% land (the rest is ocean) and also contains many of the world’s most-populated cities, while the Southern Hemisphere only is 19.1% land.
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