what do you think made all the dinosaurs die and be extinct??????
342234
actually there is a very likely (and widely accepted) theory out there that there was a period in which the earth got bombarded with comets, thousands of comets per minute and that the earth got really hot and became covered in ashes that covered the sun and prevented most life from living.  And then later the ice in the comets helped to form all the water and such.
435361
I have 2 theories for you. Yes the dinosaurs died when an asteroids hit the earth.\nFirst theory: The impact or blast killed the dinosaurs. We can speculate that the dinosaurs are only living in one continent. So when the asteroid hit earth the impact and blast isntantly killed the dinosaurs. We could also say that the radius of blast was thousands of kilometers.\nSecond Theory: After impact (like in bombing of Hiroshima and Nagasaki), there were formation of very thick clouds that even light cannot pass through (just like in animatrix). Because light cannot pass through there were no photosysthesis. Because of no photosysthesis, there is no production of food. Especially for primary food chain, protozoans, heavily dependent on sunlight to produce food of their own.
663454
Most dinosaurs are extinct. The rest just got smaller & more adaptable. All reptiles are descendants from dinosaurs. Crocodiles, Alligators, lizards, snakes, turtles, tortoises, Komodo Dragons are "living" dinosaurs.\nNot counting the stuff that lives in interior (unexplored) africa and the amazon rain forest, and the loch ness monster, which is a pleiosaur or something.\n\nDinosaurs died out a while back. A huge meteor smacked into earth- you can see the impact crater from the hit in Arizona or Russia- the evidence is that earth takes a world-killer on the chin once every 10,000 years or so- which means we're about due for another one. \nThe meteor impact threw up a huge amount of ash and dirt- like when a volcano blows, or after an atomic weapon is used, and blocked out the sun's heat from earth, what they call "nuclear winter". The earth cooled and went into an ice age until all the dust and ash had settled back down from the atmosphere. Since reptiles & dinosaurs & dragons are all cold blooded, they went into hibernation and most died off. Only the smallest and most adaptable survived.\n\nIf it hadn't been for this, mammals would never have evolved into higher life forms, because we kept getting eaten by dinosaurs and dragons.
923345
Crocadiles...\n\nSupposing that an impact was the cause of the dinosaur's demise, it would not have been an imediate death.  \n\nAn impact would have thrown dirt into the upper reaches of the atmosphere.  The Sky would have been dark day gray for a long time, and the Earth would have grown cold for years...\n\nThose animals that needed the most food would have died first, and in that order of sucession until the only survivors would have been the small scavengers.  The dinosaurs that could feed on the starved carcasses of the dead.\n\nAnd so the decendents of those survivors have had to continue to evolve to survive this colder and crueller Earth.  \n\nThe would have needed to develop an insulating layer...  Some will tell you the Birds evolved from those survivors, and if they are right then those feathers are a post-Impact survival trait...\n\nThe question has to be if there was an intelligent races of Dinosaurs...  I mean, if we suffered an equally destructive impact today, we wouldn't have the forewarning to see it coming even now...  How much of humanity would survive?  Forty Years of darkness and artic cold...
775178
Yes, that's definitely why dinosaurs were so big -- another moon pulling on them! Why haven't all these smart scientists thought of such an obvious answer? And I'll bet that second moon crashed into the earth and killed all the dinosaurs too.
256706
Dinosaurs became extinct before the camera was invented.
304118
Birds are the direct descendents of dinosaurs.  Many scientists will say they *are* dinosaurs.  As such, they are alive, so dinosaurs are alive.\n\nWhile it remains possible that some dinosaurs proper have survived, it is extremely unlikely at this point.  There is no physical evidence for it.\n\nYour second question is difficult to answer.  Are there prehistoric creatures that have survived?  Sure!  Pretty much every species on earth today (even humans!) is older than history, that makes it prehistoric!  Defining prehistoric any other way would essentially make prehistoric mean "not surviving today", so the answer would be no.\n\nWhat you mean, of course, is creatures to have survived from truly ancient times, such as from the Mesozoic (age of dinosaurs) or older, but again, it's difficult to answer.  There probably aren't any actual species that old, but it's difficult to tell if something in the fossil record is actually the same species as something alive today.  Consider, lions and tigers look and act very different alive and are certainly two different species, but it is very difficult to tell their skeletons apart.\n\nA lot of so-called "living fossils" really aren't.  For instance, we have no fossils of the Coelacanth.  It's closest relatives in the fossil record are in another family (as different as cats and dogs).  Cockroaches are often said to have been unchanged for millions of years, but it's not the case as the fossil record records them evolving continuously.  The first fossil cockroaches had three pairs of wings!\n\nBut some things have survived nearly unchanged for millions of years.  Six-gill and Port Jackson sharks are very much like they were in the age of dinosaurs.  The Tuatara is surprisingly like it's Mesozoic relatives.\n\nBut the king of living fossils is the Lingula brachiopod.  It looks like a clam and lives by filter feeding, but don't let it's calm appearance fool you.  These little guys are survivors.  They've been living in Earth's oceans almost unchanged for 550 million years!  That's almost as long as we have animal fossils at all!  Dinosaurs are hardly teenagers by comparison!\n\nAddenda:  The Komodo Dragon is NOT believed to be a dinosaur, at least not by scientists.  It is just a large monitor lizard.  Dinosaurs are not lizards, being classed among the Archosaurs with the crocodiles, pterosaurs and birds.
497059
Satans rebellion caused dinosaurs to become extinct? what kind of horseshit is that????? my God mainworry If you were any dumber plants whould be laughing at you!!!
517841
The egg.  Dinosaurs were laying eggs far before chickens had evolved, so the egg had to've come first.  :)
325078
Dinosaurs were created by a Supernatural Diety (a.k.a God) and a lot of them became extinct when the Earth became flooded almost 3000 years ago.\n\nDinsoaurs are NOT extinct; there are placed in Africa, South America, the oceans and lakes where dinosaurs still exist.
460281
I think that you are right. Well you are right. Dinosaurs did get killed by a big comet that hit the earth. Also the sun was blocked out so the plants died therefore the plant eaters died. And if the plant eaters died then the meat eaters would starve and then they would die. And that is how the dinosaurs died. \nFrom KitKat
1064624
Good point!\nAs for them being veggi beforehand...LMAO! (I wonder what that fossilized *meat* was, found in a dino's stomach? T-Rex, anyone?)\nIt's not just animals either, it goes right down to the microscopic level. I could point out the fact(scary word for xtians!)that there's more prey than predators too...but I won't. \nNature is cruel to be kind.\n\n:)
361629
millions of years ago.....\n a meteor hit the earth causing the dust, dirt, sand, and other particles to fly into the air and stay. at this time the particles caused a darkness which blocked the sun whit prevnted the plants to grow & the herbivores died.... when the herbavores died the carnivores died because herbavors were thier main source of food.
659540
Many people have different theories on this one.  Here are a few of the more popular ones:\n\n1) A large meteor hit the earth, causing ash and debris to cloud the atmosphere for years.  This made it impossible for sunlight to penetrate the atmosphere, and all plant life dies.  Herbivours then died, due to a lack of food.  Soon after, carnivours died due to a lack of food (the herbivours.\n\n2) A climate shift caused the earth to raise its temperature by a few degrees.  This caused the above devistation (beginning with plants) by heat, instead of lack of sunlight).\n\n3) Disease.\n\n4) Large dinosaurs creating large amounts of methane (think herds of cows) caused global warming.  See #2 for result.\n\n#1 is the most believed-in theory, but that status changes from year to year.
857254
the atmosphere was heavily clouded with dust that took a very long time to settle out. This caused a drastic cooling of the surface temperature of the earth. Dinosaurs, being cold blooded, could not survive that drastic a climatologic change. In fact, it is posited that an ice age began as a result of the impact and dust. If you look at major volcanic eruptions over the past few hundred years you can see the same phenomenon occurring with regard to temperatures.
497040
Hahahaha,Your funny!!!!! Dinosaurs in Alabama???? Try the whole planet at one time was inhabited by dinosaurs,Many kinds. Dinosaurs are not like indians, there are not tribs. And I am originally from Colorado,live in Navada.
333249
I think it would be naive to think that we are the only intelligent beings in this vast universe. Of course it would continue to exist. And as far as anyone knows, the boundaries to this universe may never be reached by human beings. Also, you are correct in your statement that human beings will become extinct. I say this because we only need to look at the dinosaurs. Excellent question!