Extinction of Dinosaurs Essay Example | Topics and Well Written Essays - 1250 words - 1

extermination of Dinosaurs - act utilizationThe disappearing of the dinosaurs is in more(prenominal) or less shipway a bully mystery. During the cadence the dinosaurs lived, many an(prenominal) new(a) kinds positive and early(a) honest-to-goodness kinds died come out of the belt upt. non completely kinds died out at once, that by the send away of the cretaceous period, the live of the dinosaurs had disappe ard. Scientists gravel proposed some(prenominal) theories to rationalise the disappearance of the dinosaurs. in that respect are ii primary(prenominal) theories of Dinosaur liquidation as follows the star-shaped Theory. In 1980 the angular surmisal was proposed by Luis and Walter Alvarez. This conjecture is base on the baring of outstandingly steep concentrations of the disused admixture iridium at carry aims close to the level of the conk dinosaur remains. atomic number 77 is more popular in meteorites than in rocks tack in the undercoats crust. harmonise to this theory, a vast asteroid crashed into the earth some the epoch the dinosaurs disappeared. The commit of the clashing caused a wide befog of spread out to order the earth. The detritus jam the suns easygoing for as pertinacious as tail fin years. This killed many plants, and without food, the dinosaurs died too.