This example presents two D3.js v7 charts built with SVG, using data from a city_temps.csv file. The first is a multi-series line chart for Dallas showing monthly Temperature, Rainfall, and Humidity trends with distinct colored lines and a legend. The second is a combined chart overlaying steelblue bars for rainfall with a tomato-colored line for temperature, using a band scale for months and a linear scale for values. Both charts utilize d3.csv, d3.line, d3.scaleLinear, d3.scaleBand, d3.axisBottom, d3.axisLeft, and D3 selections to render the visualizations.