Evolution literally means that there is a gradual change or improvement in something. Through evolution, some generally get complex and improved structures from simple and backward structures. Millennium ago, a society based on the collection of animal and fruit collection has gained a complex structure today. From the solar nebula 4.5 billion years ago, the stack of dust evolved into the form of today's earth. Darwin's Theory of Biological Evolution explains how more than one billion species have been created through natural selection, mutation, gene flow and genetic drift from a single organism created about 4 billion years ago.

The experiments have shown that the substances, such as living being, are also known as organic matter, which also evolves chemical substances. Chemical evolution is undoubtedly an exhilarating event, explaining the evolution of life in biological evolution, the question remains - How is life formed on earth? Scientists believe that the answer can be found through chemical evolution.

Chemical Evolution or, what is the evolution of chemical?

Chemical evolution is organized through three steps.

1. Production or repetitive, repetitive production

2. Variety or, variation
   3 Selection or, selection

3. Repetitive production:

Important events of the world are organized through regular cycles. For example, day and night, water cycle, nitrogen cycle, oxygen cycle etc. These phenomena repeatedly create new compounds and create chemical systems.
This step is basically the difference between the mechanism of biological and chemical evolution. Living organisms that produce variations through reproduction, make chemical substances through repetitive production.

1. Diversity:
   This step is similar to biological evolution. Diversification is created randomly through repetitive production.

2. Selection:
   Among the various compounds created due to diversity, the environment that is compatible with the environment prevails.

Example:

1. Miller-wise test

                           Miller-Yar Examination, Wikipedia

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Alexander Alexander and J. B. come. Healden gave a hypothesis that the primitive earth's environment was favorable for creating complex organic compounds from simple inorganic compounds. In 1952, the University of Chicago and University of California, San Diego in Stanley Miller and Harold Early Laboratory prove it.
They create an instrument to create the environment of the primitive earth. Pouring water on the device gives heat and the water condensation made by the condenser. In order to create the atmosphere, natural gas like hydrogen, methane and ammonia entered. And generates lightning through electric sparks. Thus, keeping the device a week, they get breath-taking results. They found that the water of the sea that means the water of the water has dark brown color. Observations show that there are some complex compounds in which amino acids are also produced. The amino acids that were made of living cells were thought to be produced and which could only be produced in living cells.

1. Fatty acid composition:
   The study found that carbon gases such as carbon monoxide and hydrogen are heated with the foundations of the Earth's crust and fatty acids are produced with many complex carbon compounds. Although earlier it was thought that fatty acids could not be produced in living cells. This reaction can be caused by the heat of the primitive earth's magma. And with increasing pressure, fatty acids and other compounds can go to the water level. Where natural selection can be, or natural selection - that is, most compounds will be swept away or stagnated in water, but fatty acid is stuck in the water due to its formation.

                                     Fatty acid molecules

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1. Self-consolidation or self assembly: Because of
   such many fatty acid molecules, fatty acid concentrations increase in water and some fatty acids become permanent. Because, the polar water attracts the oxygen head of the acid-fatty acid acid and insulates the carbon tail. As a result, carbon fibers of some fatty acid molecules are combined (become pronounced).

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                       Fatty acid ball is said in the picture clearly

Fatty acid screen is made from numerous such balls. The outer floor of the screen is made of carbon tail, and the water turns into a hollow goal by using the force of its repulsion. This sphere is very similar to the membrane of living cells or, like the floor. Of course, these spheres are not alive and can not be reproduced, but they have full new features. These spheres may trap other compounds within themselves and cause new reaction to the whole new environment.

Researchers have found evidence of the development of long columns through chemical evolution, which is very much like a strain of DNA.

1. RNA synthesis:
   Scientists proposed a model that RNA synthesized by carbon dioxide, water and nitrogen in the primordial world by chemical evolution. Although this model has many flaws, it can be assumed that if the mystery of RNA synthesis is taken, then there will be clear ideas about the source of life.

Scientists are still not aware of the origin of life on Earth. There is no clear idea about whether life existed outside of the world. However, it is expected that the results of these chemical reactions will be found soon. Because, our body is actually just a stack of some very common chemicals.

Source:

1. http://www.abenteuer-universum.de/pdf/miller_1953.pdf2
2. http://onlinelibrary.wiley.com/doi/10.1002/ar.10154/full3
3. http://pubs.acs.org/doi/abs/10.1021/ar300266q