The term "theory evolution" can be replaced by other synonymous phrases such as "evolutionary theory", "Darwinian theory", "natural selection theory", and "adaptive evolution theory". All of these phrases refer to the scientific theory that explains how species change over time through mechanisms such as mutation, heredity, and natural selection. The theory of evolution has been one of the most widely studied and debated concepts in the field of biology. Its importance lies in its ability to explain the diversity of life on Earth and how organisms adapt to their environment. Regardless of the phrase used, the theory of evolution remains a fundamental concept in modern biology.