The primary challenge facing global biodiversity is climate change. As temperatures rise and weather patterns shift, many species are unable to adapt quickly enough, leading to population declines and extinctions. Climate change alters habitats, disrupts migration patterns, and affects species interactions, further threatening biodiversity. Additionally, it exacerbates other threats like habitat destruction and pollution. Addressing climate change is vital for preserving biodiversity and maintaining ecosystem stability, highlighting the importance of global initiatives aimed at reducing greenhouse gas emissions and enhancing conservation efforts.