Population density is a measurement of population per unit area, or exceptionally unit volume; it is a quantity of type number density. It is frequently applied to living organisms, most of the time to humans. It is a key geographical term.
Population distribution is the spread of people across the world, ie where people live. ... The world's population is spread unevenly across the globe with concentrations of large numbers of people living in the same area. The world as a whole has more 'empty' areas than 'crowded' areas.
According to the continental drift theory, the supercontinent
Pangaea began to break up about 225-200 million years ago, eventually
fragmenting into the continents as we know them today.
