Odd  Relationships
symbiotic relationships

A symbiotic relationship is a close, long-term biological interaction between two different species. These partnerships are fundamental to survival in nature and fall into three primary categories depending on whether the organisms benefit, are harmed, or remain unaffected.

Symbiosis is the ultimate result of co-evolution, where species adapt to rely on, or tolerate, each other over millions of years. These complex interactions keep ecosystems—like global coral reefs and forests—running by controlling populations, nutrient cycling, and protecting biodiversity.