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 word hemisphere itself specifically means half of a sphere, and since the earth is considered an oblate sphere, a hemisphere is half. Geography and Climate of the Northern Hemisphere. Like the Southern Hemisphere, the Northern Hemisphere has a varied topography and climate.