This scatter plot uses the classic Iris dataset to visualize the relationship between petal and sepal measurements. It displays four metrics: petal length (x-axis), petal width (y-axis), with sepal length and width encoded as the horizontal (rx) and vertical (ry) radii of each circular mark. Species are distinguished by color, showing clusters for setosa, versicolor, and virginica. The visualization loads data via a remote CSV URL, uses `d3.scaleLinear` for axis scaling, and renders with `d3.axisLeft` and `d3.axisBottom`. Circles are drawn using D3's `.join('circle')` selection.