This scatter plot visualizes the relationship between petal length and sepal length for Iris flowers, with each black circle representing a sample from the dataset. The chart uses D3 v6’s `csv` loader to fetch the Iris dataset from a GitHub gist, then applies `scaleLinear`, `extent`, `axisLeft`, and `axisBottom` to map values and render axes. SVG circles are positioned via `attr('cx')` and `attr('cy')`. Axis labels and a bold title clarify the variables, while the plot fills the entire browser window using `window.innerWidth` and `window.innerHeight`.