What is the role of these bacteria in the nitrogen cycle?

Bacteria are very important in the nitrogen cycle because they are responsible for fixing the inorganic nitrogen that is free in the atmosphere in organic nitrogen, which enters the terrestrial trophic networks and leaves them in the form of nitrogenous wastes that go to ground. Bacteria transform molecular nitrogen into ammonia, a form of nitrogen that can be used by plants.

Other bacteria called nitrifying bacteria transform ammonium into nitrite, and then nitrate

amber has allowed scientists to study dna that has been preserved over millions of years.

supercell thunderstorms are perhaps the most violent of all thunderstorm types, and are capable of producing damaging winds, large hail, and weak-to-violent tornadoes