This scatter plot visualizes the Iris dataset, mapping petal length and width on the x and y axes, with points colored by species (setosa, versicolor, virginica). It uses D3 v6's `scaleLinear`, `extent`, `csv`, and `axisLeft`/`axisBottom` APIs to load data from a GitHub-hosted CSV, compute scales, and render an SVG with circular markers whose fill colors are assigned via a switch statement based on the species field.