The student provides a focused and detailed description of the main topic in the introduction, explaining the relation between temperature and dissolved oxygen of the water using Winkler's method. However, the research question should be reformulated to include the exact temperatures studied and avoid mentioning "water in my aquarium". The background information provided is relevant but should be shortened to maintain its relevancy. The chemistry of the experiment is well explained, including chemical reactions and formulas to aid understanding. The methodology is appropriate to the topic, focusing on answering the research question and includes steps to ensure the relevancy and validity of the obtained results. The student also demonstrates full awareness of safety hazards, ethical concerns, and environmental issues that can arise during the experiment.
