The model that states that simpler organisms have slowly changed into new in more complex organisms over millions of years
Evolution
The model that states that simpler organisms have slowly changed into new and more complex organisms over millions of years is known as the theory of evolution. This theory is based on the scientific observations and evidence that life on earth has evolved and changed over time through natural selection and genetic variation.
According to the theory of evolution, all living things share a common ancestor and have evolved through a process of natural selection, where individuals with advantageous traits are more likely to survive and reproduce, passing on those traits to their offspring.
Over millions of years, these gradual changes accumulate, leading to the development of new and more complex species. This theory is supported by a vast array of evidence from fields such as genetics, paleontology, comparative anatomy, and various other sciences.
It is important to note that the theory of evolution is a scientific theory, meaning that it is a well-supported, evidence-based explanation of how the natural world works. It is not a belief system or ideology, but rather a scientific explanation that is continually being tested and refined through ongoing research and experimentation.
More Answers:
Discovering the Process of Natural Selection: A Guide to Evolutionary BiologyEarth’s History: The Principle of Uniformitarianism
Uncovering the Mysteries of Fossils: A Comprehensive Look at the Processes of Preservation and Their Significance in Earth’s History.