The student had effectively organized the Internal Assessment (IA) into clear sections, including an introduction, body, and conclusion, with each part serving a specific purpose. The body was further subdivided to indicate different phases of exploration, and the topic was clearly stated and explained in the introduction, highlighting the relevance of O2 concentration fluctuations to climate change. The conclusion summarized the outcomes and addresses the initial aim of the investigation, while the writing remains clear and understandable throughout. The student had also demonstrated logical connections between sections and appropriately integrated technology and analytical software into the work. However, improvements were needed in the presentation of appendices and page numbering.