The student has provided a focused and detailed description of the main topic, clearly explaining the purpose of the investigation and its relevance. The background information provided is relevant and focused, with well-organized explanations of key concepts supported by literature references. The biology of the experiment is explained in a way that allows the reader to fully understand it without the need for rereading. Additionally, the student has stated and explained both null and alternative hypotheses, with extensive justification for the alternative hypothesis. The methodology of the investigation is highly appropriate to the topic, focusing on answering the research question and including appropriate steps to assure the relevancy and validity of the obtained results. Furthermore, the student correctly identifies the variables and demonstrates full awareness of safety hazards, ethical concerns, and environmental issues that can arise during the experiment.
