The student states a relevant and coherent research question, although it lacks focus as the question tag "how" imposes a broad and vague analysis. To improve the focus, the student can use question tags such as "To what extent" or "What is the effect". The student discusses a relevant environmental issue, nitrogen oxide pollution, which is a global environmental issue. They also list and explain the connections between the environmental issue and the research question, such as the use of lichens as bioindicators to monitor air quality. Overall, the student demonstrates a good understanding of the connections between the environmental issue and the research question.
