Though it may seem beneficial to use renewable plant materials for biofuel, their use raises many concerns about major environmental problems, including food shortages and serious destruction of vital soil resources. All renewable energy systems need to be investigated because humankind has limited oil, gas and coal reserves remaining. In addition, coal will become increasingly difficult to extract and will greatly increase the global warming threat.
Serious energy conservation and research on viable renewable energy technologies are needed. This book considers the effectiveness and economics of several renewable energy technologies of current interest, including biofuels, solar and wind.
Pack Edt: Shaman King Vol. 1,2,3 y 5
El Niño Gusano
Los Vengadores Vs la Patrulla-x Prologo: el Fin de Generacion Hope
Hakaiju 04