Polar bears one of the largest and most dangerous hunters in the cold regions of the North. Their bodies are built for winter and they do best in the coldest areas. Unfortunately, polar bears are becoming threatened due to changes in the world's climate. How does global warming affect polar bears? What must be done to save them?

Polar Bears in Trouble 2009, Heinle-Cengage ELT, Boston

ISBN-13: 9781424045921

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Polar Bears in Trouble 2008, Heinle & Heinle Publishers

ISBN-13: 9781424044405

Trade paperback

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