Energy and Conservation

General objective of this lecture is to present Energy and Conservation. Here briefly describe what are our main energy sources. Industrialized countries need large amounts of energy. Most of this energy comes form fossil fuels which are burnt in power stations, factories, homes and vehicles These fossil fuels formed millions of years ago, and are non-renewable. Finally present on Problems with burning fossil fuels, What is the greenhouse effect and why we need to conserve our fossil fuels.