The student provides a focused and detailed description of the main topic, clearly outlining the purpose of the study in the Introduction section. However, the research question lacks precision in defining the independent variable related to the pH of the solution. The background information is relatively precise, but it would have been beneficial to include more general information at the beginning. The biology is explained well enough for the reader to fully understand, and the methodology of the investigation is highly appropriate to the topic, utilizing transmittance and absorbance measurements. The methodology includes appropriate steps to assure the relevancy and validity of the obtained results, as evidenced by the inclusion of controlled variables in Table 1.
