This scatter plot visualizes the Iris dataset, mapping sepal length and petal length with points colored by species (blue, green, red). Built with D3 v6, it loads CSV data via `d3.csv`, uses `d3.scaleLinear` and `d3.extent` to position points, and renders with SVG circles and axes. The chart is implemented as a reusable function in `scatterPlot.js`, though the main `index.js` also directly adds labels and styling.