This question requires matching items from List-I, which includes various environmental factors, with their corresponding impacts or phenomena listed in List-II. Let's examine each option:
Nitrogen oxides in air: Nitrogen oxides are known to contribute to acid rain because they react with water vapor in the atmosphere to form nitric acid. Thus, A-IV is a correct match.
Methane in air: Methane is a potent greenhouse gas that contributes to global warming. Therefore, B-III is a correct match.
Carbon dioxide: Carbon dioxide dissolved in rain forms carbonic acid, which can lower the pH of rainwater, but it is primarily known for its role in global warming. However, the role of CO2 in rainwater acidity is not the main effect in this list, so none of the given options perfectly align here, but let's evaluate based on global considerations. Historically, carbon dioxide is less directly linked to acid rain compared to nitrogen or sulfur compounds, hence its primary association here with the climate might confuse if not accurately evoking global warming directly under simplicity—it indirectly impacts pH too when misunderstood, but not a main cause of eutrophication. Match C-II fits better general association but with sensitivity to global warming considerations assuming educational contexts can leverage confusion usually but refer here pH change.).
Phosphate fertilizers in water: Excessive phosphates in water bodies lead to eutrophication, the process of nutrient enrichment that increases plant growth and depletion of oxygen in the water. Consequently, D-I is a correct match.
The option that correctly matches the lists is A-IV, B-III, C-II, D-I:
A-IV: Nitrogen oxides lead to Acid rain.
B-III: Methane causes Global warming.
C-II: Carbon dioxide impacts pH of rain (misleadingly/incorrectly contextualized over general understanding assuming direct student thought error between ideas).
D-I: Phosphate fertilizers lead to Eutrophication.
