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Most recent (read this year) studies suggest that massive volcanic activity, caused this major event.
the climate change during the shifting of the plates that was causing the making of Pangea
I think it's extinction. ------------------------------- More specifically an "extinction event".
A meteor hit the earth and caused severe condition that organisms could not survive.
i love cookies and mammoths are all gone they all died no one knows how they died they just did ok ok
Sea-floor spreading
Some scientist think that quasars may be caused by black holes, but they are not sure how this happens. Please dont copy. Use your own words! - Anonymous <3
how may roentgens training as a scientist have affected the way that he responded to his discovery ?
took? Evolution wasn't an event. Its an ongoing process
The dinosaurs all died out. A major catastrophe, probably an asteroid impact, caused their extinction.
true
Most scientists believe that the Cretaceous extinction event was caused by a 6 mile wide asteroid that impacted Earth at what is now the Yucatan Peninsula 65.5 million years ago. The impact would have thrown tremendous amounts of dust high into the atmosphere, which would have blocked the sun for months. Without sunlight, the plants would have died, and without the plants, so would any herbivorous animals. The carnivores would have then died, too. Another theory popular with scientists is that climate change was the cause of the extinction. Before the asteroid impact, a huge volcanic trap (a large lava flow) called the Deccan Traps had been erupting for about three million years. The amount of carbon dioxide it released into the atmosphere caused tremendous global climate change, and dramatically decreased the variety of dinosaur species. It is also very plausible that it was a combination of these two factors.