Non-uniform structures refer to systems or objects that do not have a consistent shape, size, or composition throughout. These structures can be found in various fields, such as architecture, biology, and materials science. For example, a tree has branches and leaves that vary in size and shape, making it a non-uniform structure. In engineering, non-uniform structures can be designed to optimize performance or aesthetics. An example is a bridge that uses varying materials and shapes to support different loads. Understanding non-uniform structures is essential for creating efficient designs that meet specific functional requirements.