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SSC Geography QUESTION #6307
Question 1
Which environmental transformation represents the most significant anthropogenic modification of the nitrogen cycle?
  • Deforestation reducing nitrogen fixation by legumes
  • Haber-Bosch process creating reactive nitrogen for fertilizers✔️
  • Burning fossil fuels releasing NOx compounds
  • Wetland drainage reducing denitrification
Correct Answer Explanation
The Haber-Bosch process (converting N2 to NH3 for fertilizers) has doubled the amount of reactive nitrogen entering the biosphere annually - the single largest human modification of the nitrogen cycle, exceeding all natural terrestrial nitrogen fixation combined.