Global warming causes significant disruption in polar ecosystems, primarily through melting ice, changing habitats, and altering food webs. Species such as polar bears and seals rely on sea ice for hunting and breeding. As temperatures rise, these habitats shrink, leading to declining populations and increased competition for resources. Additionally, warming ocean waters affect the nutrient upwelling that sustains various marine species, further impacting the biodiversity of these fragile ecosystems. Ultimately, global warming threatens to dismantle the intricate relationships within polar food webs, resulting in profound ecological shifts.