It is called the theory of evolution. Most people use the word 'theory' to mean an idea or hunch that someone has, but in science the word 'theory' refers to the way that we interpret facts. It begins with an idea, a hypothesis that explains some observed phenomenon. If enough evidence accumulates to support this idea, it moves to the next step, known as a theory. The theory and supporting evidence is published. Other scientists publish there research which may support or oppose the theory. Over time the theory becomes accepted or is rejected by scientists. However, it always remains a theory subject to change.
The theory of evolution, really natural selection was published by Darwin over 180 years ago. Since then there have been thousands of papers written supporting the theory most in form of papers and charts showing the evolution of various creatures including man. Most, but not all the evidence is archaeological.
When we say evolution is a fact, what is mean is a well accepted theory which is supported by a preponderance of evidence. The theory of evolution is taught as fact just as we teach the theory of gravitation or the theory of germs. All of which have been useful explanations of observations.
but what facts are there that prove humans came from non living matter???
I think your using the word facts instead of what it should be,which is information,,,because there are no facts that even come close to show life from nonliving matter
You've been mixing up two entirely different theories, the Theory of Evolution, which explains the evolution of the species and
Abiogenesis, a theory that attempts to explain the beginning life. Evolution is well accepted among scientists and is treated as fact.
Abiogenesis at this point in time, does not address the creation of human life or any other species but rather the creation of organic compounds from non-organic compounds which are considered the building blocks of life. Although the occurrence of abiogenesis is uncontroversial among scientists, there is no single, generally accepted model for the origin of life. It's been demonstrated in the lab that most amino acids, the chemical constituents of the proteins used in all living organisms, can be synthesized from inorganic compounds under conditions intended to replicate those of the early earth.
In short, we understand a lot about the evolution of the species and how the building blocks of life could have been created on early earth. However, we don't have any accepted explanation of how organic molecules developed into the first species.