This D3.js (v6) scatter plot visualizes the Iris dataset, plotting petal length against petal width with circle marks colored by species. The SVG renderer uses `scaleLinear`, `extent`, `axisLeft`, and `axisBottom` to construct axes and scales. The code loads CSV data from a GitHub URL, maps categorical species values to colors, and displays rotated axis labels. The chart omits a legend but differentiates setosa, versicolor, and virginica through skyblue, lightgreen, and orange fills, respectively.