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Well the main theory is the asteroid theory. I agree that it was an asteroid as there is a lot of evidence for it. For example, there is a layer of iridium covering the earth which is found in asteroids. also there is a crater in Mexico called the Chixulub crater which is said to be from 65 million years ago at the time of the dinosaur's extinction. Also the impact of an asteroid hitting earth would have caused the earths atmosphere to be filled with dust, therefore blocking off the sun so photosynthesis wouldn't happen so plants would die, herbivores would die as there would be nothing for them to eat and the same for predators so there would be no dinosaurs left.
What else can I help you with?
What major group flourished only after the dinosaurs became extinct?
the dinosaurs became extinct because the was kill of there family
What is a possible explanation to why dinosaurs became extinct?
because a meteorite came and hit the earth. just like it shows in the song dinosuar
What era did dinosaurs became extinct?
I think they became extinct at the end of the Mesozoic era
When did the dinosaur's become extinct?
Non avian dinosaurs became extinct 65.5 million years ago, at the end of the Cretaceous. However, birds are considered dinosaurs. Because birds still exist, dinosaurs are not completely extinct.
What are the ratings and certificates for Rex the Runt How Dinosaurs Became Extinct - 1994?
Rex the Runt How Dinosaurs Became Extinct - 1994 is rated/received certificates of: Spain:T
Did primates evolve before dinosaurs became extinct?
no
Were dinosaurs extinct in the 19th century?
Dinosaurs became extinct millions of years ago. Dinosaurs died off long before humans came into existence.
When was dinosaurs in this world?
The last dinosaurs became extinct 65 million years ago.
How did dinosaurs change during the Cretaceous period?
No. If you count birds as dinosaurs, they still exist. If you don't, dinosaurs became extinct at the end of the Cretaceous, not the beginning.
How can you tell that dinosaurs suddenly became extinct?
time machine
Are dodos considered dinosaurs?
No, dodos are not considered dinosaurs. Dodos were flightless birds that lived on the island of Mauritius and became extinct in the 17th century. Dinosaurs were a group of reptiles that lived millions of years ago and also became extinct.
Did dinosaurs become extinct AD or BC?
B.CAnswer:Although the majority of dinosaurs died out about 70 million years ago, the present day birds are evolved from theropods and are direct descendants of the dinosaurs. In that manner dinosaurs have not become extinct.
