For many years, researchers have claimed that birds and dinosaurs are related. But now, some biologists argue that birds have evolved from some species of flying dinosaurs. They are the only remnants to survive the extinction during the Cretaceous period 65 million years ago. These experts haven’t been able to determine how they did it. Some feel that birds adapt well, and that’s how they can survive. And they continue to adapt today. We may never know if this theory is correct, but it makes lots of sense on the surface…