While there is no practical limit on what types of people can form a friendship, friends tend to share common backgrounds, occupations, or interests and have similar demographics.
Approximately 800,000,000 humans live in the Southern Hemisphere, representing only 10â12% of the total global human population of 7.3 billion. This is due to the fact that there is significantly less land in the Southern Hemisphere than in the Northern Hemisphere.
The northern hemisphere has the most land mass and almost 90% of the human population. You can see this quite clearly simply be looking at the Earth from above the North poleâ¦ and from below the South pole. See related links (below) to see images of the Earth from these two viewpoints.