Biological relations refer to the connections between living organisms based on their genetic and evolutionary ties. These relationships can be observed in various forms, such as family trees in humans or the classification of species in biology. Understanding these connections helps scientists study inheritance, evolution, and the diversity of life. In ecosystems, biological relations also include interactions between different species, such as predator-prey dynamics and symbiosis. These relationships are crucial for maintaining balance within ecosystems, as they influence population sizes, resource availability, and overall biodiversity.