This scatterplot displays the relationship between petal length and sepal width for iris flowers, with each circle representing a data point. The visualization uses React to render SVG elements, while D3 v7 handles the data loading via `d3.csv`, scales through `scaleLinear`, and axis generation. Data comes from the classic iris dataset fetched from a remote CSV file. Hovering over a circle reveals its petal length value through a native SVG `<title>` tooltip element.