How do scientists today use Charles Darwin theory of evolution?

1.) All organisms differ in traits such as size and behavior.

2.) No two individuals are exactly alike.

3.) There was a gradual change in each species.

4.) Fossils were different from the living animals. However, these fossils had many similarities to modern forms of life.

5.) Species on the Galapagos Islands resembled species on the mainland but they were different in certain characteristics.

6.) Some organisms became isolated on many islands.

7.) Most organisms produce more offspring that can survive