mechanism of natural selection( heritability, variation, differential reproductive success) how it works with behavioral examples

Answer 1

here is a good start.

http://wolfweb.unr.edu/homepage/vpravosu/Classes/NaturalSelection.pdf

Answer 2

i have one more question
What is evolution why is it so hotly debated who was/is instrumental in shaping how we consider life? Express the
belief/science behind the argument for and against?

Answer 3

That looks like four questions.

Evolution is gradual change. It's debated among a few people because they find it hard to believe that man's ancient ancestors were not always human.

You'll find a lot more information at this site.

http://www.pbs.org/wgbh/evolution/