Yes dinosaurs really existed, along with numerous other species, which we have their fossilized remains as proof.
There are a number of factors that could have lead to the demise of the dinos. One with a lot of solid support is a large asteroid impacting earth ~ 65 million years ago. This may have wiped out the majority of dino species (Alvarez hypothesis).
Since there were no humans at the time of the dinos, we will never know for sure, but like a detective investigating a crime sceen, we can put together clues that point to the truth.
2007-07-03 11:12:32
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answer #1
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answered by DrSean 4
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Scientists can't decide on a definite cause for why the dinosaurs went extinct (also known as the "KT extinction"). There are several theories: excessive volcanism, overabundance of mammals eating dinosaur eggs, mass diseases, changes in Earth's orbit, and the ever popular asteroid impact (also known as the Alvarez Asteroid Impact Theory).
This theory states that approximately 65 million years ago, an asteroid ranging from 4-9 miles in diameter hit Earth in the Yucatan Penninsula. Today, the crater (known as Chicxulub) is 120 miles in diameter and 1 mile deep.
Evidence of this theory lies in such geologic anomalies as Siderophile Elements (very rare elements on Earth, but rich in asteroids), iridium (found in KT boundary rock layers all around the earth; extremely rare on Earth, except in the center, but very abundant in asteroids) tekites (quartz grains that are vaporized and cool as glass beads with no crystalline structure), and shocked quartz (quartz that has cleaved into parallel fractures, due to intense pressure; found at nuclear bomb sites and known asteroid impact sites).
As to whether or not they existed, I'm pretty sure they did. If not, we've been digging up some pretty fascinating and bizarre rock formations for hundreds of years now. There is so much evidence in fossil records across the world that I honestly don't know how one could deny the presence of dinosaurs in Earth's history. It's fascinating to think that creatures of that stature and appearance roamed our world for so many millions of years. Our world has such a rich past, and dinosaurs are such an important part of how our world has been shaped today.
2007-07-03 12:58:51
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answer #2
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answered by Angi_Richi 2
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All the answers are correct but they forgot one thing. The death of the dinosaurs is caused by the sudden change in climate. The sun was blocked by the dust storm caused by the meteorite. Because of this, most of the plants died and the ones who survived all died due to starvation. They have no more to eat.
2007-07-05 17:15:55
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answer #3
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answered by deo 3
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Angi_Richi has it nailed.
Here's a cool site too if you want to learn more about dinosaurs. By the way, you don't have to pay the site subscription fee to use it but if you do you can see the site without all the ads.
http://www.enchantedlearning.com/subjects/dinosaurs/
2007-07-03 17:13:56
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answer #4
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answered by GatorGal 4
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when you say 'look at the lochness monster' ... i cant. i mean theres no clear pictures of it. about big foot i do believe in him/her. i mean when you look at apes and man there had to be something in between. caveman.. thats what im thinking. because if we evolved from apes, why are they still here. so my guess is that bigfoot is probably a caveman. not an evolved form of man, but the first test product. ps// i dont think dinosaurs can live in the polluted enviornment. they would die out anyways because the lack of fresh air. (( the bigger the animal the more air they need, and with the air we would supply them they would die))
2016-05-17 10:50:10
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answer #5
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answered by ? 3
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I don't believe they ever existed.. I think it was all made up. Yeah, I know they found a few bones, and foot prints. But come one now. Wouldn't they some how come back, some how. Or wouldn't some kinda animal resemble a dinosaur.
I think the scientist found bones from people that died and had a really interesting dream, and put all the human bones together to great an image. That's just my theory.
2007-07-05 20:08:45
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answer #6
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answered by Imdatchick 3
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straight from god:
'Do I keep a constant vigil over every move you make? Not in the kind of prying intrusive sense that some of you seem to think. Let's say I maintain an awareness of what's going on, at a planetary level. I tend only to focus on evolutionary leaps. See if they're going in the right direction'
'And if they're not?'
'Nothing. Usually'
'Usually?'
'Usually species evolving in the wrong direction kill themselves off or become extinct for other reasons'
'Usually?'
'There have been one or two cases where a wrong species has had the potential of becoming dominant at the expense of a more promising strain'
'Let me guess. Dinosaurs on this planet are an example. Too successful. Suppressed the development of mammals and were showing no signs of developing intelligence. So you engineered a little corrective action in the form of a suitably selected asteroid'
'Perceptive. Almost correct. They were showing signs of developing intelligence, even co-operation. Study your velocirapters. But far too predatory. Incapable of ever developing a "respect" for other life forms. It takes carrying your young to promote the development of emotional attachment to other animals. Earth reptiles aren't built for that. The mammals who are, as you rightly say, couldn't get a foothold against such mighty predators. You've now reached the stage where you could hold your own even against dinosaurs, but that's only been true for about a thousand years, you wouldn't have stood a chance 2 million years ago, so the dinosaurs had to go. They were, however, far too well balanced with the ecology of the planet, and never developed technology, so they weren't going to kill themselves off in a hurry. Regrettably, I had to intervene.'
'Regrettably?'
'They were a beautiful and stunningly successful life form. One doesn't destroy such things without a qualm.'
'But at that stage how could you know that a better prospect would arise from the ashes?'
'I didn't. But the probability was quite high.'
theres a lot more of this convo somewhere on the internet
2007-07-03 11:04:19
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answer #7
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answered by Armada 1
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Why Did The Dinosaurs Die? Because you touch your self at night
2007-07-04 08:49:39
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answer #8
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answered by TheExile 2
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Adding to sddingman's answer, Alvarez wrote a book I found fascinating - T. rex and the crater of doom (or something similar.) You and your dad would enjoy reading it.
2007-07-03 11:21:09
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answer #9
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answered by greydoc6 7
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It was meteors that killed the dinasaurs, I belive there is evidence in Mexico oceans that supports this and other places. This caused changes in weather patterns thus affecting their ability to survive.
2007-07-03 11:04:22
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answer #10
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answered by Gina 2
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