the geological time scale is basically just a 'Earth' dating system. geo-scientists use it to keep track of Earths geological/crusty/rocky events.
couldnt be 'A' because thats talking about geopolitical changes
cant be 'C' cause thats talking about a whole nother type of system called the geologic temperature record
'D' is talking about planetary equilibrium, that has to do with energy balance and radiation and the atmosphere and blah blah blah its not the right answer
the question was about geology and the only answer about basic geology is B. They define geological periods because scientists use them as reference points for tracking the history of the earth.
The correct answer is D) They cause significant changes that disrupt the equilibrium of the earth and lead to natural separation points.
The catastrophic events related to changes in geological timelines cause significant changes that disrupt the equilibrium of the earth and lead to natural separation points.
Historians and scientists use catastrophic events because they mark the end of an era and the beginning of a new epoch in the history of humanity. Earthquakes and floods, even meteorites, have changed the face of the Earth and its inhabitants, in most of the case the animal life on the planet. We are referring to the extinction of the dinosaurs, or glaciers melt that covered many sites, and other kinds of catastrophes that science used them as a natural separation point.
Because people didnt know who to trust and also they wanted to blame people for starting WW1 and as Hitler decided to be injust to the jews, other people folloeed Hitler's decisions.
