FIGURE 37.5 Renewable and nonrenewable energy resources. Fossil fuels and nuclear fuels are nonrenewable energy resources. Renewable energy resources include potentially renewable energy sources such as biomass, which is renewable as long as humans do not use it faster than it can be replenished, and nondepletable energy sources, such as solar radiation and wind.
(top row: Ian Hamilton/iStockphoto.com, Sandra Nicol/iStockphoto.com, Michael Utech/iStockphoto.com, Hans F. Meier/iStockphoto.com; middle row: Bernd Lang/iStockphoto.com, Inga Spence/Science Source; bottom row: acilo/iStockphoto.com, Don Mason/Blend Images/Corbis, amana images inc./Alamy, Rhoberazzi/iStockphoto.com)