There are two views of origins. One says that everything came about by natural causes; the other looks to a supernatural cause. In the case of the origin of first life, either it came about by spontaneous chemical generation without intelligent intervention, or by the intervention of an intelligent being through special Creation.
Evolutionists believe that life began in a spontaneous way from nonliving chemicals by purely natural processes. Shortly after the earth was cooled enough to allow it, they tell us, the combination of simple gases like hydrogen, nitrogen, ammonia, and carbon dioxide reacted to form elementary amino acids, which in time developed into DNA chains and finally cells. Of course, this is said to have taken several billion years and the extra energy of the sun, volcanic activity, lightning, and cosmic rays were needed to keep the process going. Experimentation begun by Stanley Miller arid Harold Urey has attempted to reconstruct these conditions and has had success in producing various amino acids needed for life. From this, much of the scientific community has concluded that the spontaneous chemical generation of life from a pre biotic soup is the way life began.
There are, however, some very good reasons to reject this view. First, the early earth conditions necessary to produce life are just as likely to destroy it. The experimental work has shown that no oxygen can be present for the reaction to work. Also, the energy needed from the sun and cosmic radiation are damaging to the very substances produced. Under the conditions required for life to have arisen spontaneously, it is more likely that the elements would be destroyed faster than they could be produced. Even if the right chemicals could be produced, no satisfactory answer has been given for how they could have been arranged properly and been enclosed in a cell wall. This would require another set of conditions altogether.