Choose a scientific theory and argue on its behalf

I need help talking about Darwin’s theory of evolution and natural selection and argue on its behalf. I also need to talk about how It also influenced not just the scientific community but the philosophy of science as well. Attached is my research proposal stating what I will be talking about. The whole paper is one big argument about my topic. Starting with a thesis statement. I also attached a sample MLA paper. I would love some ideas on how Darwin’s theory is correct through his own evidence and evidence found afterward. Also, how he evolved evolution theory through his findings.