This scatter plot visualizes the Iris dataset, mapping petal length and width for individual flowers while coloring each point by species: red for setosa, green for versicolor, and purple for virginica. The code loads CSV data via D3’s `csv` function, parses numeric columns, and builds scales with `scaleLinear` and `extent`. Circles are rendered as SVG elements with fixed radius, while axes are generated using `axisLeft` and `axisBottom`. The visualization also encodes sepal measurements as `rx` and `ry` attributes, though these do not affect circle appearance given the constant radius. The chart fills the browser window with a pale turquoise title.