The primary function of polar regions in climate regulation lies in their ability to reflect solar radiation through large ice sheets and snow cover. This albedo effect helps stabilize global temperatures. Additionally, polar regions are critical for regulating ocean currents and maintaining global heat distribution. They also act as significant carbon sinks, storing vast amounts of carbon dioxide. The melting of polar ice due to climate change is concerning as it contributes to sea-level rise and disrupts these vital climate-regulating mechanisms, affecting ecosystems far beyond the poles.