We all know that petroleum is not the type of energy renewal energy, to form petroleum, earth requires millions of years, this course allows that the earth will experience the emptiness of petroleum reserves, if we use outside the earth's capacity to produce it. Petroleum energy is not one that can be utilized, some alternative energy materials as a substitute for petroleum is coal, solar energy, water motion energy, wind energy, energy of water vapor, and so forth, there was even told that there are plants that produce oil which can be used as fuel. such as distance or known as Jatropha. Some alternative energy has started untouched and used as raw energy, but this requires our awareness to conserve petroleum, so we can reduce the efficient usage of oil. Why do we need to conserve the usage of oil as energy, and thinking about other energy alternatives that could be used, of course, is also encouraged to meet the needs of our descendants, our children and our grandchildren, they
Saving energy we must do, because we know that the energy we use today, such as petroleum is a limited energy. In a sense the ability of the earth to provide energy is very limited. Therefore there must be a balance between supply and consumption. How can we save energy? In daily life many things we can do to conserve energy, including a save on electricity usage. We must save electricity, is one thing we can do to save energy. how do we save on electricity usage? This can be done with the use of electricity-saving equipment, such as using lcd monitor as lcd monitor has a smaller power consumption compared to the tube.