A meteor hit the earth and caused severe condition that organisms could not survive.
A massive meteorite impact.
because they realised they were wrong.
scientist say the die because of a flood and a drought
The Cretaceous-Tertiary Extinction was a giant asteroid that hit Earth and killed many organisms. It formed giant dust clouds and enough heat to cause a worldwide fires. The fossils of the dead organisms gave out a story to the scientists who were researching them. For example, a meat-eating dinosaur ate a plant-eating dinosaur during the Cretaceous-Tertiary Extinction. Soon after the meat-eating dinosaur ate the plant-eating dinosaur, the meat-eating dinosaur died. The fossil of the plant-eating dinosaur and the meat-eating dinosaur told a story to the scientist about what the meat-eating dinosaur did to the other dinosaur; then the other story to the meat-eating dinosaur. You're welcome :) -Ashley G
Extinction of the dinosaurs.
A scientist who studies dinosaurs is called a paleontologist.
No one knows exactly how dinosaurs started to exist, but some people believe that they evolved from single celled organisms that lived in the oceans. Some scientist believe that dinosaurs might be related to lizards or to birds.
Palaeontologists study fossils and dinosaurs.
Paleontologist.
Mainly archeologists and biologists.
Dinosaurs have long been extinct, making it impossible for scientists to work with living dinosaurs.
Because they are alive today, birds are dinosaurs. And because of fossils.
What do you call a scientist who introduced a system of classifying organisms