This area chart visualizes monthly CO₂ emission trends in India for 2021, using a teal-filled area path with labeled data points. The chart is built with D3 v7 (d3.area, scalePoint, scaleLinear) and renders to SVG, with axes generated by d3.axisBottom and d3.axisLeft. Data is loaded from a raw CSV file via d3.csv, and each monthly value is displayed with a circular marker and text label. The visualization includes axis labels and a bold title, all styled with plain CSS.