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Scientists say the symbiotic bond formed between nitrogen-fixing bacteria and Neptune seagrass is an example of convergent evolution. Photo by Shane Gross/NPL/Minden Pictures
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The meadows of luscious green seagrass that dot coastal regions around the world are gaining recognition as important marine habitats and carbon sinks, but there is still a lot we don’t know about how these marine plants live. For example, scientists have assumed that seagrasses, like many other marine plants, take up important nutrients like nitrogen directly from the surrounding seawater and sediment. 

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