What are the theories about how dinosaurs became extinct?
Why did the dinosaurs become extinct? What happened over 65 million years ago to kill a species that had survived for 150 million years? The answer is that no one knows for sure, but everyone seems to have their own favorite theory. Whatever caused the death of the dinosaurs also caused the death of about 70% of all of the species on the Earth. Now we’ll introduce just a few of the popular theories dealing with the dinosaur extinction at the the end of the Cretaceous Period. ————————————–… Asteroid Impact Climate Change Disease Volcanic Eruptions Asteroid Impact Asteroids very seldom pass through the earth’s atmosphere, but when they do they cause mass destruction. One of the most common extinction theories is that an asteroid 4-9 miles (10 km) wide struck the earth on the tip of the Yucatan Peninsula, in the Gulf of Mexico dealing the dinosaurs a fatal blow. Upon striking, the comet would have sent dust and steam into the atmosphere and caused huge forest fire
