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In the chilly waters of the earth’s oceans, animals survive by using a number of different strategies. Some animals are cold-blooded, and their bodies don’t need to stay very warm. Others are warm-blooded, and their bodies need to stay warm in the ocean’s cold. Sea otters fluff up their fur and add air to it, creating an insulating blanket. Seals use blubber, a thick fatty layer that also acts like a natural sweater. In this activity, you’ll explore how fat works to keep animals warm.How does fat keep animals warm?
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Fecha publicaci?n: 12.5.2016
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