Oceans serve as the planet’s largest habitat and also help to regulate the global climate. But why is the ocean salty? And how is climate change impacting the ocean? Find out more about the ocean, including the consequences of and potential solutions to these changes.
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Select footage courtesy NASA: https://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=11056
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Oceans 101 | National Geographic