What astronomical changes killed all dinosaurs?
Was it climate change or some asteroid fell on them? If they were on Earth for 165 million years, I doubt it's climate change.
But I also don't think an aestroid would kill all. There have got to be some survivors too.
And could the dinosaurs have understood that their end has come?
- 6 months ago
what dinosaurs do you speak of? there is no evidence of dinosaurs
- 6 months ago
So far, the evidence seems to indicate it was an asteroid strike that got 'em... During their reign on the Earth, the climate went to warmer than it is now, to much colder, several times - and, they apparently survived. (Warmer climate seemed to facilitate quicker evolutionary changes.) Then - 65 million years ago, the impact of the asteroid on the Yucatan peninsula seems to have wiped out about 75% of the land animals (and many plants) on Earth. There were a few survivors - but, the close of the dinosaur era allowed mammals to rise.
- StarryskyLv 76 months ago
alligators, caymans and crocs.
turtles, tortoises and most sea life
lizards and snakes
frogs, salamanders and toads
worms, insects and spiders
I am sure a bunch more made it.
- nineteenthlyLv 76 months ago
The Chicxulub Impactor killed off non-avian dinosaurs who may already have been going through some kind of ecological crisis, although that last bit has recently been disputed. If there had been enough survivors to form a small "herd" as it were, as opposed to the occasional isolated survivor which is possible, they would've reproduced and repopulated the planet, so there can have been no survivors who didn't die within a couple of centuries of the event, probably much earlier, of starvation. It's possible that small carrion-feeding dinosaurs would have had a slight population bump just afterwards, but once the food supply was gone they would soon disappear as well.
- How do you think about the answers? You can sign in to vote the answer.
- daniel gLv 76 months ago
All supporting facts suggest the 6 mile wide meteorite traveling 38,000 MPH that hit earth some 64 million years ago was the last mass extinction event to finish off the last of large animals.
The blast equal to 14 X 10 ex 14 tons of TNT. (140,000 hydrogen bombs)
Fossils show suffocation from dust killed most, the "nuclear winter" the rest.
The drastic change in environment, what was able to adapt, became the ancestors of animal life we have today
- Anonymous6 months ago
I know. I don't know why all the dinosaurs died, but life still evolved. From what- amoebas!?
- Mark IXLv 76 months ago
So this really big rock, called an asteroid, crashes into the Earth really quickly. That causes billions and billions of tons of rock to be vaporised and go into the atmosphere. This means that little light from the sun can reach the planet, where it's needed to keep things warm and allow plants to grow. Nowadays we call this a "nuclear winter" and it causes all the big animals on the planet to die.
I hope this explanation is simple enough for you.