Evolution is the process by which species change over time through the process of natural selection. It is one of the cornerstones of modern biology, and there is overwhelming scientific evidence to support the theory of evolution.

Evolution occurs through small changes in the genetic makeup of a population over many generations. These changes, called mutations, can be caused by a variety of factors, including errors during DNA replication, exposure to radiation or chemicals, and viral infections. Some mutations are beneficial and help an organism survive and reproduce more effectively in its environment, while others are neutral or harmful.

Over time, the accumulation of beneficial mutations can lead to the evolution of new species. While the process of evolution can be slow and may not be noticeable on a day-to-day basis, the evidence of evolution can be seen in the fossil record, in the similarities and differences between different species, and in the genetic makeup of organisms.

Overall, evolution is not a mystery, but rather a well-established scientific theory that helps us understand the diversity of life on Earth.