90% of the Earth’s population lives where?
Approximately 90% of the Earth's population lives in the Northern Hemisphere.
This is because the Northern Hemisphere has a greater landmass and more habitable land than the Southern Hemisphere.
The majority of the world's largest and most populous countries, such as China, India, the United States, and Russia, are located in the Northern Hemisphere. However, it's worth noting that there are still significant populations living in the Southern Hemisphere, particularly in countries such as Brazil, Indonesia, and Australia.