The bacteria can chemically combine nitrogen with hydrogen to form ammonia (NH3). This combining process is called nitrogen

The bacteria can chemically combine nitrogen with hydrogen to form ammonia (NH3). This combining process is called nitrogen fixation. Which group of organisms chemically combines nitrogen with hydrogen in a process called nitrogen fixation?

birds and reptiles

all mammals

bacteria

only aquatic plants

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  1.  I just took the test and the answer is D.bacteria according to the answer key. Hope this helped you out even if I was a week late

  2. Bacteria

    Explanation:

    Nitrification fixation takes place by nitrogen-fixing bacteria like Azotobacter, Klebsiella, Bacillus etc which convert atmospheric nitrogen gas into fixed-nitrogen compounds like nitrates or ammonium ions for the plants to readily absorb.

    The nitrogen fixing bacteria can be free-living like cyanobacteria or live with symbiotic relationship with plants and fungi.

    The chemical conversion of di-nitrogen to ammonia takes place with the help of enzymes like nitrogenase in combination with leghahemoglobin, a protein through a reduction reaction.

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