Nitrogen Cycle Crossword Puzzle

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QUESTIONS LIST: nitrification : this process converts ammonia to nitrite and then to nitrate, nitrogen fixation : this is the process by which nitrogen gas from the atmosphere is converted into ammonia or other nitrogen-containing compounds that can be used by plants, nitrogen : a key component of proteins, nucleic acids, and other important biological molecules, and without it, life would not be possible, rhizobium : a bacteria that can carry out nitrogen fixation, assimilation : this is the process by which plants take up nitrogen in the form of nitrate or ammonia and use it to build organic molecules such as amino acids and proteins, ammonification : a process when plants and animals die or excrete waste, the nitrogen in their tissues is converted into ammonia by bacteria and fungi, denitrification : this is the process by which bacteria convert nitrate back into nitrogen gas, which is released into the atmosphere.