This D3.js (v6) scatter plot visualizes the Iris dataset, plotting petal length against petal width with colored circles representing each species (setosa, versicolor, virginica). The visualization also encodes sepal measurements as the `rx` and `ry` attributes on the circles, though the standard radius remains fixed. The SVG is rendered full-window, with axes generated via `d3.scaleLinear`, `d3.axisLeft`, and `d3.axisBottom`. Data is loaded asynchronously from a CSV URL using `d3.csv`. Axis labels are styled in green Times font.