Naturalistic evolutionists believe in natural selection and that living things all have a similar origin from which they evolved. Everything happened because of natural forces, without God or another deity driving it. There are also other types of evolutionists, such as theistic or diest, who believe that a god set the evolutionary process into motion.
Evolution has multiple pieces of evidence to support it. Some examples are fossils, genetics, and natural selection. For more information, click the links below:
https://biologytwentee.science.blog/2019/04/09/evolution-evidence-fossil-record-genetics/
https://biologytwentee.science.blog/2019/04/09/evolution-evidence-natural-selection/
Why am I here? 