Answers.comÂ® is making the world better one answer at a time. The element that makes the strongest material is carbon, and the material which is made is graphene. Thao Hg.
<br /><br /> Solar power is the cheapest renewable energy source for small-scale use, such as pocket calculators, LED lights, and remote (small) electrical appliances. Hydroelectric power is the cheapest renewable energy source for large-scale production. That is, it has the lowest cost to construct and maintain the generating facilities compared to the amount of energy produced.
Hydro Power. Hydro Power is one of the cleanest, most environmentally safe sources of renewable energy. In addition to the clean electricity it offers us, hydro power plants create lakes that offer an assortment of recreational opportunities: swimming, boating and fishing.ydro Power. Hydro Power is one of the cleanest, most environmentally safe sources of renewable energy. In addition to the clean electricity it offers us, hydro power plants create lakes that offer an assortment of recreational opportunities: swimming, boating and fishing.