The student provides a focused and detailed description of the aim of the experiment, which is to determine the ecological status of the chosen water tanks by investigating their dissolved oxygen content and possibly finding a correlation between the ecological status and distance from the city center. They also provide relevant and focused background information about the causes of water pollution, how ecological status is determined, and the tanks that are going to be investigated. The methodology used is appropriate and focused on answering the research question, including appropriate steps to assure the relevancy and validity of the obtained results. However, the student did not show full awareness of ethical and environmental concerns that can arise during the experiment.
