These are a non renewable source of energy that is extracted beneath the earth. Human beings are now more dependent on these particular sources of energy. Lots of companies are showing interest to dig oil as well as gas and to provide it to the people. This kind of interest has led to the evolution of new companies. One can easily count the various types of oil and gas companies in USA that has marked a revolution in the international market.
These are a non renewable source of energy that is extracted beneath the earth. Human beings are now more dependent on these particular sources of energy. Lots of companies are showing interest to dig oil as well as gas and to provide it to the people. This kind of interest has led to the evolution of new companies. One can easily count the various types of oil and gas companies in USA that has marked a revolution in the international market.
