Evolution is called a scientific theory for several reasons. First, it involves the formation of all living things on the planet. The theory of evolution explains how life on Earth has diversified and changed over time, from simple single-celled organisms to the complex and diverse organisms we see today.
Second, there is a substantial amount of evidence to support the theory of evolution. Fossil records, DNA analysis, comparative anatomy, and observations of natural selection in action all provide evidence that supports the idea that species have evolved and continue to evolve over time.
Third, the theory of evolution deals with topics that are completely testable in the laboratory. Scientists can conduct experiments and make predictions based on the theory of evolution. For example, scientists can observe the effects of natural selection on populations of organisms in controlled environments to test the predictions of the theory.
Finally, the theory of evolution is widely accepted by scientists all over the world. The scientific community has reached a consensus that evolution is the best explanation for the diversity of life on Earth. This acceptance is based on the overwhelming evidence and the successful predictions made by the theory.
In summary, evolution is called a scientific theory because it explains the formation of all living things, has substantial evidence supporting it, is testable in the laboratory, and is widely accepted by scientists.