This example visualizes climate trends from 2010 to 2022 with a synthetic dataset of 156 monthly records. It combines sky-blue bars for rainfall on a left axis with tomato-colored temperature and green CO₂ lines on a right axis. The chart uses D3.js version 7, employing `d3.scaleTime` for the time axis, `d3.scaleLinear` for the dual quantitative scales, and `d3.line` for the path generation. `d3.select` appends SVG elements, while `d3.axisBottom`, `d3.axisLeft`, and `d3.axisRight` render the axes.