This scatter plot visualizes the Iris dataset, showing the relationship between sepal length and petal length for three Iris species, with each point colored by species category. The D3 v7 code loads the CSV from a GitHub repository, converts string measurements to numbers, and uses `d3.scaleLinear` for the axes, `d3.scaleOrdinal` for the color mapping, and `d3.axisBottom`/`d3.axisLeft` for the tick marks. Points are rendered as SVG circles with an opacity of 0.8, and the chart includes labeled axes titled "Sepal Length" and "Petal Length."