The student does not clearly describe how the data was obtained and processed, presenting raw data without sufficient explanation of the measurement methods, such as the calibration of the CO₂ probe and the timing of data collection. The description of data recording and processing lacks detail, with inconsistent units and incorrect numerical formatting that detracts from clarity and precision. Additionally, the student does not include considerations of uncertainties, missing an opportunity to calculate and discuss their impact on the results. However, the work does not hinder the validity of the conclusion, as the investigation is well-structured and aligns with the hypothesis. The student should enhance the explanation of data processing, specifically regarding the calculation of standard deviation, to improve transparency and relevance to the research question.
