Why Are Plankton the Most Vital Organisms on Earth? | BBC Earth

For World Oceans Day the BBC Unplugged Team explore how vital Plankton really are.
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Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of astounding, entertaining, thought-provoking and educational natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.
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