This scatter plot visualizes the Iris dataset, showing petal length against petal width with points colored by species (Setosa, Versicolor, and Virginia). The visualization uses D3 v6 to load CSV data via `d3.csv`, scales with `d3.scaleLinear`, and renders SVG circles from `d3.selectAll`. Axes are generated with `d3.axisLeft` and `d3.axisBottom`, and labeled with custom SVG text elements. The data comes from a remote gist file, and the chart responds to the full browser window dimensions.