The biological significance of biodiversity lies in its essential role in ecosystem stability and functioning. Higher levels of biodiversity contribute to resilience against environmental changes and disturbances, ensuring ecosystem services like clean air, water, and soil fertility are maintained. Biodiversity also enhances genetic variability within species, which is crucial for adaptation and survival in changing conditions. Protecting biodiversity is vital for sustaining life on Earth, as it supports food security, human health, and overall ecological balance.