6.1 - Renewable and Nonrenewable Resources6.2 - Global Energy Consumption6.3 - Fuel Types and Uses6.4 - Distribution of Natural Energy Resources6.5 - Fossil Fuels6.6 - Nuclear Power6.7 - Energy from Biomass6.8 - Solar Energy6.9 - Hydroelectric Power6.10 - Geothermal Energy6.11 - Hydrogen Fuel Cell6.12 - Wind Energy6.13 - Energy Conservation