This graphic compares the environmental impact of four protein sources—cattle, pork, poultry, and mealworms—using a unit chart of small colored squares. Each column uses a distinct hue to represent resource use or emissions: orange for land, blue for water, and red for climate warming potential, with square counts scaled directly from the CSV data. Built with D3 v4, the visualization generates SVG rectangles in a grid layout, and also renders a brown wheat icon per protein source, sized proportionally to each food’s land footprint for a direct, visual comparison.