The movement of wind and water, the heat and light of the sun, the carbohydrates in plants, and the warmth in the Earth—all are energy sources that can supply our needs in a sustainable way. A variety ...

Students will use maps, graphs, and weather data to assess ... and design their own systems totake advantage of local renewable energy sources. Talk as a group about theimportant variables to ...

They can be processed to provide energy and useful materials. Renewable resources are those which ... of resource exploitation is copper. The graph below shows how the estimated global population ...