When birds migrate south for the winter, they may fly hundreds or even thousands of kilometers in

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When birds migrate south for the winter, they may fly hundreds or even thousands of kilometers in a relatively short period of time. Why do birds put on a layer of fat before their annual migration? Why don’t they store this energy in the form of carbohydrate?

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Conceptual Integrated Science

ISBN: 9780321818508

2nd Edition

Authors: Paul G Hewitt, Suzanne A Lyons

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