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Earth is 4.55 billion years old. If you don't count birds, Dinosaurs were around for 166 million years or about 3.6% of Earth's history. If you count birds as dinosaurs, which most scientists now do, dinosaurs have been around for 231 million years or about 5% of Earth's history.

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9y ago

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How did life start after asteroid hit earth and wiped out dinosaurs?

Life did not start after the dinosaurs were wiped out. Life on Earth started billions of years before that. The asteroid wiped out a large portion of life on earth, but not all of it. Some things survived.


How did dinosaurs were wiped out?

A meteor shower.


Was it an asteroid that wiped out dinosaurs or glaciers?

It was something you did.


How did the Dinosaurs die?

No one knows for sure. But here are some things that people think If you are christian/catholic- God wiped them out and then created Adam and eve. Other- A huge volcanic explosion or A giant crater hit the earth and wiped out the dinosaurs and a chemical reaction occured and life was formed. Hope that helps!


Did the dinosaurs get wiped out by an asteroid?

No somebody had a massive dump and it killed them all


Does an asteroid contribute to extinction?

I believe it does. Scientists think that an asteroid wiped out the dinosaurs.


Did a supernova kill the dinosaurs?

Probably not. Current evidence suggests that the dinosaurs were wiped out by an asteroid impact, possibly in combination with an outburst of volcanic activity.


One theory about what wiped out the dinosaurs says that one of these may have hit Earth?

A meteor.


Why arre their no more dinosaurs?

there isn't any because a big meteor came and wiped them out


Why are there no dinosaurs left?

Technically there are dinosaurs still around. Most paleontologists now classify birds as dinosaurs. Other than that, the dinosaurs are believed to have been wiped out by an asteroid or comet impact 65.5 million years ago.


How dinosaurs vanished?

some say an asteroid hit the earth and wiped out the dinosaurs. others say the climate got colder and the dinos couldn't adapt.


Did dinosaurs ever exit?

apparently yes. but they were wiped out by a massive meteorite millions of years ago,