The relationship between habitat complexity and species richness is characterized by a positive correlation. More complex habitats, such as coral reefs or forests, provide a greater variety of niches and resources, supporting a higher number of species. This complexity influences interactions like predation, competition, and symbiosis, allowing numerous organisms to coexist. Conversely, simpler environments tend to have fewer species due to limited resources and niches. Understanding this relationship is essential for conservation efforts, as maintaining habitat diversity can lead to increased biodiversity and ecosystem stability.