research on renewable energy

there are many alternative energy sources like solar, wind geothermal hydro electric and tides(singapore does not have all of them)

although there are many ways to get energy through alternative energy sources, singaporeans should first stop wasting energy resources such as not recycling recyclable items such as cans, paper and plastic etc..

there are even more alternative energy sources such as bio mass energy and hydropower energy(singapore too does not have them)