Why arent their any dinosaurs anymore?

Answer 1

There are no non avian dinosaurs anymore because of the K-T extinction event 65.5 million years ago. An asteroid with a diameter of 6 miles crashed into what is now the Yucatan Peninsula, creating the Chixculub crater. It threw so much dust into the atmosphere, that sunlight was blocked for months. Plants died without sunlight, and

the herbivorous dinosaurs died without plants to eat. The carnivores soon died out, too, because their prey was gone.

However, birds, a group of dinosaurs, do still exist today.