21: Earth's Materials Last updated Jan 11, 2021 Save as PDF 20.18: Earth's Energy- Challenge 3 21.8: Preventing Hazardous Waste Problems Page ID6105 ( \newcommand{\kernel}{\mathrm{null}\,}\) 21.8: Preventing Hazardous Waste Problems21.1: Materials Humans Use21.2: Renewable vs. Nonrenewable Resources21.3: Ore Deposits21.4: Ore Mines21.5: Ore Extraction21.6: Earth's Materials- Challenge 121.7: Environmental Impacts of Mining21.8: Hazardous Waste21.10: Earth's Materials- Challenge 221.11: Availability of Natural Resources21.12: Natural Resource Conservation21.13: Earth's Materials- Challenge 3