The first step in changing atmospheric nitrogen into more usable NH₃is called_____________ . A)nitrification B)denitrification C)ammonification D)nitrogen fixation

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The first step in changing atmospheric nitrogen into more usable forms is nitrogen fixation, which involves converting nitrogen gas into ammonia or ammonium ions. Nitrification is the process of converting ammonia into nitrite and then nitrate. Denitrification is the process of converting nitrate into nitrogen gas. Ammonification is the process of converting organic nitrogen into ammonia.

The First Step in Changing Atmospheric Nitrogen into More Usable