Charles Darwin was a famous scientist who made many important discoveries about the natural world. One of his most famous discoveries was the theory of evolution. Darwin believed that all living things had evolved over time from simpler forms of life. He also discovered that animals and plants adapt to their environment in order to survive. This process is called natural selection. Darwin’s work helped us to understand how different species of animals and plants have developed over millions of years. His discoveries have had a huge impact on our understanding of the natural world and continue to influence scientific research today.