The student provides a focused and detailed description of the main topic, clearly stating the aim of the experiment to examine the effect of copper (II) sulfate on catalase activity. They also provide relevant and focused background information, describing the increase in heavy metals in the oceans and its effect on aquatic life. The biology is explained well enough for the reader to easily understand, with scientific explanations on enzymes and enzyme inhibitors. The methodology of the investigation is highly appropriate to the topic, with appropriate steps to assure the relevancy and validity of the obtained results. The student also shows full awareness of safety hazards, ethical concerns, and environmental issues that can arise during the experiment.
