In 2020, I received 45 points in IB, including a 7 in Biology. This IA allowed me to achieve that grade. Understanding this essay’s style, structure and presentation will help boost IA marks considerably. The essay’s title is, ‘How is the width to height ratio of the limpet Patella vulgata affected by the angle (degrees) of the slope of rock that it lives on, on a North Devon rocky shore?’. It covers the data gathering process, processing and correlation calculates and consequent analysis in detail. This essay is to be used as an exemplar ONLY, to show an example of what a high-scoring IA looks like. Academic honesty is extremely important in the IB, and any plagiarism will risk the entire qualification.