Hello, I have some questions  evolution:
1) is it possible to accept one part of evolution but not accept another part. For example my friend doesn't accept human evolution
2)Does genetic similarity show common ancestry
3)How do I teach somone how evolution is a fact

1. what an individual will or will not acct or agree with is impossible to predict. It certainly would be contradictory!

2. very definitely yes - you need to read more about this using google and wikipedia

3. learn about it at university and then consider training as a school teacher or university lecturer. Having an interest in your spare time is also fine!