That's because Earth is not accurately round
It's physically impossible to fold a piece of paper more than 7 times.
A chart or a map.
No... it is impossible... but Walk Disney said "Its kinda fun to do the impossible"
a map
If you could physically fold a piece of paper in half 20 times, it would result in 2^20 layers, which is equal to 1,048,576 layers. However, due to physical limitations, it is practically impossible to fold a piece of paper that many times.
A map represents all parts of the Earth's surface on a flat piece of paper. Maps use projections to depict the curved Earth's surface on a 2-dimensional plane.
The force of gravity pulls the screwed up piece of paper downward. This force is a result of the mass of the paper interacting with the Earth's gravitational field.
The way the 3 dimensional earth is shown on a flat piece of paper.
it has 0 nets because it is impossible to make a perfect ball /circular globe out of a flat piece of paper
The world is round, and maps are flat. It is difficult to accurately display a round object on a flat piece of paper.
Projection
The plural of a piece of paper is "pieces of paper."