Top 10 Theories About What Killed the Dinosaurs — TopTenzNet

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About 66 million years ago the Cretaceous–Paleogene (K–Pg) extinction event wiped out about 80% of life on Earth, and no one is exly sure what caused it. Many species, most famously the dinosaurs, were annihilated, while many of the survivors underwent radical transformations. Scientists have long debated the cause of one of the biggest mass extinctions in history, and while theyve reached some general consensus no one is 100% certain which of the following is the cause.\r
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10. Asteroid\r
9. Global Firestorm\r
8. Hypercanes\r
7. Gradual Extinction and Mammal Competition\r
6. Continental Drift\r
5. Changes in Water Levels\r
4. Disease\r
3. Comet\r
2. Volcano\r
1. Combined Event\r
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