The relationship between bacteria and legumes that results in nitrogen is best described as mutualistic.
Mutualism is the type of association between two organisms in which both parties benefit from one another.
An example of mutualism is the relationship between bacteria and leguminous plants.
Leguminous plants provide shelter for the bacteria while bacteria help the plant to fix atmospheric nitrogen.
Therefore, the relationship between bacteria and legumes that results in nitrogen is best described as mutualistic.
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