Years ago not only could earth’s volcanism have produced the iridium, but more important volcanoes did produce tremendous amounts of carbon dioxide the increased levels of carbon dioxide in the atmosphere prevented raeth from radiating excess heat back into space, and thus caused a worldwide warming
The warming of earth is what caused the dinosaurs’ disappearance. After examining dinosaur egg fossils paleontologists discovered that the eggshells became thinner in at least one species this was
Thought to be the result result of heat adversely affecting the dinisaurs’ metabolism thin-shelled eggs,which were easily broken lowered the survival rate among the offspring and contributed to the eventual extinction of the dinosaurs