The student has done a good job of defining their research question by clearly stating the independent and dependent variables, as well as the method of analysis conducted. The background theory section is well-organized and relevant to the research question, providing the necessary information to fully comprehend the experiment's results. The student has justified the choice of techniques used for measuring the independent and dependent variables and has also explained the choice of sampling technique applied. Additionally, the student has addressed safety, ethical, and environmental issues associated with the investigation. The methodology is sufficiently described, allowing for the investigation to be reproduced, and there is no irrelevant or repetitive information included in the description of the methodology, ensuring clarity for the reader.