This animated scatter plot cycles through different iris flower measurements, plotting petal width, sepal width, petal length, and sepal length every two seconds. The visualization uses the D3.js library's `scaleLinear`, `extent`, `axisLeft`, `axisBottom`, and `selectAll` APIs to render SVG circles and axes. Data comes from the classic Iris dataset loaded via D3's `csv` function. Circle colors encode species—blue for setosa, red for versicolor, yellow for virginica—while a black background and white axis labels maintain high contrast throughout the animation.