Why Did Dinosaurs Become Extinct

There are many theories on how dinosaurs became extinct but scientists have not yet found a proven reason why. About sixty-five million years ago Dinosauriformes, or as we call them Dinosaurs, walked and roamed planet Earth. These massive carnivores, herbivores, and omnivores lived many years on earth before humans appeared. There were several variations of dinosaurs such as land, sea, and air dinosaurs. For a millions of years the dinosaurs thrived in their environment. They had an abundant food supply to eat and they had ample space to roam and reproduce offspring. Unfortunately the dinosaurs did not last forever since they all mysteriously became extinct. Three of the main theories on how dinosaurs became extinct are climate changes, an asteroid impact, and massive volcanos erupting.
Several scientists believe that global and climate changes may have made the
This theory was first introduced by physicist Luis Alvarez and his son geologist Walter Alvarez (Vergano). Later on other scientist backed up the Alvarez’s asteroid extinction theory with geological evidence. Proof of the asteroid collision was found in Chicxulub, Mexico with the discovery of a gargantuan crater that was more than 110 miles wide (Vergano). The explosion that created the crater would have been made by an asteroid that was at least 6 miles across releasing as much energy as 100 trillion tons of TNT (Q). This explosion is a billion times more powerful than the atomic bombs that destroyed Hiroshima and Nagasaki (Q). Scientist also believe that this explosion created dense clouds of dust blocking the sun's rays, as well as darkening and chilling Earth to deadly levels for most plants and, in turn, many animals (Vergano). With this drastic drop in temperatures, it would have been nearly impossible for any life form to survive let alone the