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.
Food Web of an Arctic Ecosystem. At the top of the food web, the Polar Bear reigns. The only predator for the Polar bear is Man (not shown on this ecosystem chart). Polar bears eat the Arctic seal and the Atlantic salmon and has no predator thus for making it the top of its food web. Below is a list of who eats who: The Arctic seal is eaten by the polar bear and eats the Atlantic salmon. The polar bear eats the Atlantic salmon, and so does the arctic seal.