three alternative energy sources are wind energy harnessed by windmills, water energy often harnessed before it hits a dam, and light energy harnessed with a solar panel
Since there are no significant amounts of free hydrogen, it should be considered more of an energy storage than an energy source. In other words, it takes energy to separate water into hydrogen and...
A renewable resource is one that is replaced by natural processes at a rate that is equal to or faster than its consumption. For example, the wind, the tides, and the sun, are all resources that can...