Select the sentence in this passage that can be classified as a false statement. Polar bears are threatened by the profound changes in their habitat. Rising temperatures have led to a dramatic loss of the sea ice that forms above the frigid northern waters. The bears obtain food by hunting the seals that live just below the surface of the ice. Without the ice, polar bears are unable to hunt for their main source of nourishment. The melting ice will lead to the extinction of the polar bear as a species.