Discussion Questions: What Killed the Dinosaurs?

Which hypothesis has the most evidence in support of it? Which has the least? If you were to choose, which evidence would you find the most compelling?
What would need to happen for one hypothesis to become a more accepted theory about the extinction?
Why would the fossil record be so inconclusive, with different interpretations of the time it took dinosaurs to become extinct?
What do you think killed the dinosaurs? Explain reasons for your choice.
Why is it important to us to understand the cause of this mass extinction?