When we see that there are fossils found in a certain geological layer, which are evidence that a certain species existed at that time, and then in the next geological stratum we no longer find those fossils, and there is no evidence that the species which used to exist still exists, we infer that the species became extinct. If a whole lot of species become extinct at approximately the same time, we call that an extinction event, such as the KT extinction.
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∙ 11y agoScientists know the KT extinction (Cretaceous-Paleogene extinction event) took place through geological evidence such as the presence of a global iridium layer and shocked quartz in sedimentary rocks which suggest an asteroid impact. Fossil records also show a sudden mass extinction of dinosaurs and other species around this time period. Additionally, climate models and simulations support the idea of catastrophic events causing the extinction.
The book "Number the Stars" takes place in 1943, during World War II in Nazi-occupied Denmark.
challenger
The Apollo 13 mission took place in 1970.
Like all changes and new ideas, this involved many scientists who wanted to know more and why things were the way that they were. If you think about how the wheel was invented, it took many people thinking of ways to move large things over long distances. It didn't take a 'ah haw' moment, it took trial and error. The Scientific Revolution began when people began to use the scientific method to explain what they were seeing. It took a very long time and it is still going on today. For example: What is a worm hole?
The first manned landing was July 20, 1969.
the scientists believe the big bang took place is northeast
The Permian Extinction took place 250 million years ago, and 98% of life died out.
A large mass extinction took place at the end
I know it took place in Harlem, New York, but I was also wondering when it took place.
As far as i know it took place in New York As far as i know it took place in New York
many advances took place. i just dont know what they are.
many advances took place. i just dont know what they are.
The 1927 Indian National Congress took place in Madras, which is now know as Chennai.
The battle of Montreal never took place, do you know why??
hitler maybe I don't know
I don't know you tell me
i need to know where it took place too so let me know when u find out....