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    Krill in the Food Web

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    What are krill? Using appropriate terminology, discuss the role of krill in the Antarctic food web, and describe what has been happening to the population of these animals over that past 150 years and why.

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    Krill are a shrimp-like marine invertebrate (smaller than most shrimp) that are a vital part of the ecosystem in the ocean. En masse, as they school, are the major food source for many whales, rays, whale sharks, and are part of an important source for seals and some seabirds. They live in all oceans of the world, including the colder arctic and Antarctic climates, and are considered by ecologists to be a keystone species - in other words, at the ...

    Solution Summary

    The role of krill in Antarctic's food web is discussed.