Question

Which of the following is not one of the major environmental problems resulting from human interference in the nitrogen cycle?

• A. Eutrophication
• B. Nitrous oxide release increases global warming
• C. Increased acid rain
• D. Stratospheric ozone depletion

Answer 1

The correct option is D Stratospheric ozone depletion

• Eutrophication is characterised by a significant increase of algae due to the greater availability of one or more growth factors necessary for photosynthesis, such as sunlight, carbon dioxide and nutrients like Nitrogen.
  
• Nitrous oxides, being a greenhouse gas traps heat and light from the sun in the earth's atmosphere, which increases the temperature leading to global warming.
  
• In the presence of rain, nitrogen oxides form nitric acid, contributing to the acid rain along with sulphuric acid.
• Aside from sunlight (solar radiation), the main ingredients for ground-level ozone formation are volatile organic compounds (VOCs) and nitrogen oxides (NOx).

So, the correct option is 'Stratospheric ozone depletion'.