Darwin's Theory of Evolution

Darwin's Theory of Evolution

For thousands years ago many Phelosphers had argued and search about how life have been created and modified till they came into some factors that made new species from old organisms due to the change of populations. what i know about these factor is like :

1- organisms compete for the food resources.

2- organisms produce more offspring so theycan survive

3-some organisms have specail charactestics than other to survive longer .

and other things i guess .....

but as i found in google the most important thing in this theory is talking about the natural selection .which i get lost in it .

that all i know about the theory