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Answer

Correct Option is 2 Only

Answer explanation : Sea ice forms when water in the oceans is cooled to temperatures below freezing. Most sea ice forms in the Arctic and Antarctic Oceans. Sea ice: Does not raise sea level when it melts, because it forms from ocean water. Is closely linked with our planet’s climate, so scientists are concerned about its recent decline. Fills a central role in the lives and customs of native Arctic people. Provides a place for polar bears, seals, and other animals to live. Is one way that scientists study the effects of climate change.

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