Many + Parts 123123 H H C C H H H H H H H H C C H H H H H H - - - - C C C C H H H H H H H H - - - - - - - -
3 kinds of elements build a brick Brick becomes building block for a layer of bricks Layer of bricks becomes building block for wall.
These images represent the evolution of chemistry. Lets take a look at what they indicate.
