Dinosaur Extinction Theory

Dino Extinction Theory
One theory is a asteroid hit the earth at the Yucatan Peninsula and wiped off a lot of the dinosaurs. The asteroid was really fast, going at least 39 miles per a second. When it hit the earth, it made a giant heat wave. Most dinosaurs have died because of it and it killed all of the plant. Since there were no more plants, most of the herbivores died off and then the carnivores died. The area by the Yucatan Peninsula is evidence of that because the asteroid hit that place and left a gigantic crater. Another piece of evidence that it was hit is that near the crater there was some asteroid rock or minerals. An assumption of a fellow person is that the meteorite took out a lot of life but if there wasn’t a meteorite many other reasons like that the earth became colder and there was flooding could have killed off the dinosaurs too.