O-LevelBiologyEcology & Environment5090/11 · May/June 2018 · Q321 Mark

Which two air pollutants contribute to acid rain?

Acarbon dioxide and methane

Boxygen and oxides of nitrogen

Csulfur dioxide and methane

Dsulfur dioxide and oxides of nitrogen

✓ Correct answer

D: sulfur dioxide and oxides of nitrogen

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Topic: Ecology & Environment, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2018 Paper 1 Variant 1, question 32.

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