What are two characteristics of strong structures?

Two characteristics of strong structures are stability and durability. Stability ensures that a structure can withstand various forces, such as wind, earthquakes, and loads without collapsing or swaying excessively. Durability refers to the materials and construction methods used, which must resist wear, weathering, and other environmental factors over time, ensuring longevity and safety. Together, these characteristics allow strong structures to maintain their integrity and function effectively throughout their lifespan.