Question:
How does glue stick things together?
Answer:
Glue is an adhesive, which means it has a strong attraction for other materials. Some glues are specifically designed for paper, while others are attracted to many different kinds of materials. While a glue may be advertised as a glue-all, it sticks to rough surfaces better than smooth surfaces.
For more information about adhesives and how to make glue, see GLUE:ADHESIVE