A horizontal bar chart displays the greenhouse gas emissions in 2019 for the top 11 GDP countries, using a dataset with country names and population values. The chart, rendered as SVG with D3 v7, maps population to bar width on a linear scale and country names to vertical bands on a band scale. Tooltips appear on hover, showing the exact emission value, and the bars darken temporarily when the mouse is over them. The visualization includes axis labels and a title, with axes generated using `axisLeft` and `axisBottom`.