my teacher said a comet hit yhe earth and all of them die
119318
That's the most widely accepted theory.\nAnother one that I personally like is : The sex of the baby in some reptiles (crocodiles, for example) is determined by the environment temperature AFTER the eggs are laid by the female; so if the climate is hot, all babies come out as males and if it's cold, they all hatch as females (it could be the other way round, i'm not sure). If the same was true for the dinosaurs, a sudden change in climate temperature (something like global warming, for some reason) would have led to a certain sex significantly outnumbering the others, making it impossible for them to reproduce and, thus leading to the demise of the dinosaurs.\nDon't know how accurate that is, but I don't see it improbable.
341199
my daughters history teacher a few years ago, it was BAD!!!
209608
I'm so sorry for your loss.  When my dad died, I was comforted by the fact that he joined the "great cloud of witnesses" in heaven and that he could see me and cheer me on.  I'm sure that your popo would like to see you succeed in your life.  Think of him each day in a positive way and work to make him proud.  Remember the good times and focus on the good memories.  Ask your teacher(s) if there is any way you could do some extra credit to bring your grades back up.  You can do this -- one day at a time.
662984
Oh man, the same year that video came out, a football player at my school died of something that was very similar to what the chick in the video died from.  A special kind of pneumonia.  Sneaks up on the person that has it, they just feel a little sick, then BAM!  Takes them down surprisingly fast.
424078
It is estimated that Earth is bombarded by a city-sized asteroid once every 65mil yrs.\ni) Assuming a Poisson distribution, find the probability that Earth will be hit by 2 or less of such asteroids in the next 10000yrs.\nEta Carinae is a suspected hypernova that is 7000 light-years away from Earth. Scientists have observed 200 of such star in many distant galaxies. It was found that the stars have an average life-span of 200mil years with variance 2500mil yrs^2.\nii) Construct a 95% confidence interval for the mean lifespan of Eta Carinae, giving your answer correct to 8 significant figures.\nIt was found later that Eta Carinae was formed 200.01mil yrs ago. \niii) Using the sample of 200 stars earlier, a scientist boldly claimed that Eta Carinae will explode today, causing devastation to Earth in 7000years’ time. By stating clearly the null and alternate hypothesis, test the scientist's claim at 5% level of significance.\nYou may assume the normality of the population of stars observed.
167081
One of my close friends died from that stuff...not worth it
297892
i did and they are dead, in a sort of purgatoy. if u have any exact questions u can get a hold of me via IM or email.
74705
I am a seventh grader and once my class had to do a report on some of the experiments we had conducted in our school laboratory. The girl who sits next to me didn't know what to write, so I told her to write that our teacher had caused a nuclear meltdown in our lab! The poor girl obviously didn't know what nuclear reactor or meltdown meant,so she fell for it; hook,line & sinker! The best part is that she actually submitted the report to our physics teacher! I was on the ground, howling with laughter. The experiment was actually about heating a metal ball to show expansion.
404789
We are all on this earth for a very short time. You & I aren't speacial, we too will die. Make the most of this life while we are here, is the lesson we should get from this. Lets try to be thankful for this young mans life even though it was short. He died doing something he loved. In my book thats better then being layed up in a bed suffering for long time. I know it is hard, but after the, understandable, saddess life goes on and our time here is limited.
161802
u need to seriously slap your *biology* instructor for asking you that
163708
As a scientific mind and an individual who is curious, I would like to know. Then I could find a location to watch the impact with my family so I would know such a rare occurance and then die happily. Of course, an asteroid cannot destroy a planet unless it is planet-sized, and there are none left; an asteroid can only cause massive extinction events like the K-T impactor (aka "The Dinosaur Killer"), and probably cripple the human race. Watch "Deep Impact"; it's the most accurate movie made about such a thing thus far.
675852
a meteor is going to pass very close to the earth on that day...check out\nhttp://english.ohmynews.com/articleview/article_view.asp?at_code=341846
194959
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.
210558
Holy cow-thats a Master's thesis project at least!  Ok, there are lots of theories out there concerning a cataclymic hit-and since both she and the people she is comparing also believe in the asteroid theory, we have to just think of all the things that could happen, reasonably:\nThe ashes from the volcanoes could block out the sun so drastically that it became too cold for the dinosaurs to live\nThe ashes blocked the sun out sufficiently to kill the major plant life, so the herbivorous dinos starved, and then the carnivores starved.\nThe volcanoes spewed out sufficient CO2 that the dinos suffocated\nThe volcanoes spewed out toxic gas that poisoned the dinos.\nThe volcanoes subtly changed the climate so that over thousands or hundreds of thousands of year, other lifeforms, such as mammals, birds, and the surviving reptiles, gains a major advantage and caused the dino extinction.\nAbout the meteor:  Either you could hypothesize that the volcanoes erupted spontaneously, and it had nothing to do with meteors, or that the meteors by themselves weren't a killing force but disrupted the crust of the Earth sufficient to open up volcanoes all over the Earth, or that the meteor alone killed most of the dinosaurs, and the resulting volcanoes killed off the rest.\nI didnt mention the effects of tsunamis and earthquakes caused by the volcanoes because that wouldnt reasonably be enough to kill off all the dinos.\nHope those ideas help-good luck.
152933
There is a comet that is visible now and will be passing reasonable near Earth (a few million miles away) about that time, but no, no comet is going to hit the Earth any time soon.
523725
Two answerers have reported cases of  hit by meteorite but it is not known whether the ususual phenomenon had been  reported by them to astronomers for  verification. If not it is only their word against the physical impossibility of meteor  ever striking anybody on earth it is difficult to believe that what hit them  was meteorite or anyt hing else.\n\nThe risk of getting hit by a meteorite is practically zero. The largest of the Leonid meteors -- a very small number -- might be the size of baseballs. But after striking the atmosphere at 44 miles per second, few if any will survive long enough to hit the ground.\n\nWhat of peope on earth  the satellites in orbit to whom meteor  pose a slight risk have never so far been hit by it.. Even the ones the size of a grain of sand, because they are moving 200 time faster than a speeding bullet, could damage a satellite beyond repair if it were to hit it just right. Another danger from the impact of a meteor on a satellite is an effect called "charging" in which the collision creates a tiny cloud of electrically charged gas, called plasma, that can short out electrical systems.\n\nMany satellite operators take precautions during meteor showers, such as angling sensitive optics away from the oncoming meteors, or turning solar arrays on edge to the shower.\n\nHowever,scientist  note that the risk of a satellite getting "taken out" by a meteorite or even a shower of it like Leonid is quite small, less than 0.1 percent. The  satellites are more at risk every day from man-made space junk.\n\nDespite this technical position there have been some cases of these bolts from the blues striking the 'sinners' (?) on earth.Thus\n\nIn all of recorded human history, no one has ever been killed by a meteor. But there have been a number of people struck by them, as well as some who were nearly struck, along with many cases of damage to animals and property. \n\nSome examples:\n\nOn November 30, 1954, Alabama housewife Ann Hodges was taking a nap on her couch when she was awakened by a 3-pound (1.4-kilogram) meteor that crashed through the roof of her house, bounced off a piece of furniture and struck her in the hip, causing a large bruise. \nOn October 9, 1992, a large fireball was seen streaking over the eastern United States, finally exploding into many pieces. In Peekskill, New York, one of the pieces struck a Chevrolet automobile owned by Michelle Knapp. Knapp was not in the car at the time, but heard the crash and ran out to her driveway to find a hole punched clear through the trunk of her car and a warm 26-pound (12-kilogram) meteorite lying under the vehicle. But things turned out well in the end -- her old and rather run-down automobile instantly became a collectors item and later sold for tens of thousands of dollars. \nOn June 21, 1994, Jose Martin of Spain was driving with his wife near Madrid when a 3-pound (1.4-kilogram) meteor crashed through his windshield, bent the steering wheel and ended up in the back seat. Martin suffered a broken finger while his wife was uninjured.
207935
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