This D3.js scatter plot visualizes the classic Iris dataset, plotting petal length against sepal length for individual flower samples. The visualization uses SVG circles rendered on a canvas that fills the browser window, with axes labeled using `d3.axisLeft` and `d3.axisBottom`. Data is loaded asynchronously from a GitHub-hosted CSV file using `d3.csv`, with numerical fields parsed and scaled to pixel coordinates via `d3.scaleLinear` and `d3.extent`. The plot adjusts dynamically to the viewport dimensions, providing a clean, minimal exploration of the dataset's distribution.