This scatter plot visualizes the Iris Dataset, mapping petal length and width on the x- and y-axes while coloring each point by species (green for setosa, purple for versicolor, orange for virginica). The D3.js v6 code loads the CSV data via `d3.csv`, and uses `d3.scaleLinear` for axes and `d3.extent` to compute domains. Using `d3.select` and the `join` operator, it appends SVG circles whose radius is fixed, while also setting `rx` and `ry` attributes (though these do not affect circle rendering). Axis labels and tick marks are generated with `d3.axisLeft` and `d3.axisBottom`. The visualization is rendered directly to an SVG element sized to the full browser window.