Answer:
Nitrate
Explanation:
is the form of nitrogen most used by plants for growth and development. Nitrate is the form that can most easily be lost to groundwater. Ammonium taken in by plants is used directly in proteins. This form is not lost as easily from the soil.
I believe it is "Bacilli" because the question give you a hint by saying "<span>rod shaped structures", Bacilli very similar to this description.
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