Energy Resources Definition. Energy is defined by physicists as the capacity to do work. Environmental studies energy resources.
Want to learn more. Much of that energy is supplied by electricity which must be generated from other energy stores. Early humans had modest energy requirements mostly food and fuel for fires to cook and keep warm.
Sources of energy have evolved from human and animal power to fossil fuels uranium water power wind and the sun.
Energy is defined by physicists as the capacity to do work. Environmental studies energy resources. Human energy consumption has grown steadily throughout human history. The sun is the primary energy source in our lives.