What is the World Made of?
Why do so many things in this world share the same characteristics?
People have come to realize that the matter of the world is
made from a few
fundamental building blocks of nature.
The word "fundamental" is key here. By fundamental building blocks we
mean objects that are
simple and structureless -- not made of anything smaller.
Even in ancient times, people sought to organize the world around them into fundamental
elements, such as earth, air, fire, and water.