disease ?. ice age?. What killed of the dinosaurs?.
What killed of the dinosaurs?
How did the dinosaurs become extinct? This is a question that has stumped scientists ever since dinosaur fossils were first discovered. There are many theories as to how the dinosaurs became extinct. This page presents some of the most popular theories. Keep in mind that there is no absolutely proven theory. No one knows for certain exactly why and how the dinosaurs became extinct.
gradually changed in climate?