Multiple line charts display earthquake frequencies from 2000 to 2015, broken down by magnitude bands (5.0–5.9, 6.0–6.9, 7.0–7.9, and 8.0+), alongside estimated deaths as a radius scale. Built with D3 v5, the visualization uses `d3.line` with monotone curve interpolation, `d3.scaleTime` and `d3.scaleLinear` for axes, and renders as SVG. Data comes from the USGS earthquake records embedded in the local CSV file.