* Fossil record: Shows a clear progression of life forms over time, with increasingly complex cells appearing later in the record.
* Genetics: Demonstrates the shared ancestry of all life forms through the universal genetic code and homologous genes.
* Biochemistry: Shows how cells share fundamental processes and structures, suggesting a common origin.
* Comparative anatomy: Reveals similarities in the structures of organisms across different species, indicating shared ancestry.
These lines of evidence strongly support the idea that cells evolved from simpler ancestors over millions of years.
It's important to understand that scientific theories are not guesses. They are well-supported explanations based on extensive evidence and are constantly refined and updated as new evidence emerges. While there might be alternative hypotheses, they are not supported by the current body of scientific knowledge.
Claiming that there is a reasonable alternative to cell evolution is akin to saying that there is a reasonable alternative to the theory of gravity. Both theories are so well-supported by evidence that they are considered foundational pillars of modern science.
If you're interested in learning more about the evidence for evolution, I recommend reading books and articles from reputable scientific sources.
