2 Module Overview For the past 8,000 years, the ice cores of Antarctica and Greenland indicate that Earthâs climate has been unusually stable. Yet global climate has changed several times in Earthâs geological history, sometimes at a relatively abrupt rate, as shown by the Greenland ice core data. In the module, Temperature Over Time, you compared temperature patterns and trends over different time scales and regions.
It feeds on a wide variety of creatures. Smaller seals probably eat mostly krill, but also squid and fish. Larger leopard seals probably switch from krill to more substantial prey, including king, adelie, rockhopper, gentoo, emperor, and chinstrap penguins, and less frequently, other seals, such as crabeater seal.
Their favorite foods include the ringed and bearded seal which is plentiful in the Arctic. Polar bears will eat sea birds and their eggs if available where they live. Their diet occasionally includes smaller whales (such as the beluga) and the walrus. Their eating habits include scavenging for dead animals including different types of whales and fish. The polar bear is an important part of Arctic food chain.