This document discusses renewable and non-renewable energy resources. It provides details on various renewable resources like solar, geothermal, wind, biomass, and water/hydroelectric. These are defined as natural resources that can be replenished in a short period of time. Non-renewable resources like coal, petroleum, gas and nuclear energy are those that cannot be replenished or regrown at the same scale as consumption. Coal, petroleum and gas are fossil fuels that take a long time to form. The document outlines some advantages of renewable energy like a perpetual fuel supply and reduced emissions, and disadvantages such as higher costs and unreliability due to environmental conditions.