How does comparative anatomy support the modern theory of evolution?

It shows how organisms transitioned. For example,

-Whales used to be land mammals, and they have finger bones in their fins. The changes in their inner ear to hear better in water than in land also shows adaptation.

-Humans used to be apes, and our curved spine is reminiscent that. The tail bone for example still has muscle attached to it which shows even today we still have a tail. It is just inside of our body. (And we still have the gene for a full tail, it's just inactive in most people. There are cases of babies being born with a full prehensile tail.)

-Recent discoveries show that velociraptors probably had some feathers on their forearms. This was discovered due to comparison of birds and their forearm bones which showed protrusions that suggest feather development.