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Question 1 of 3 Easy

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1 Easy

What percentage of species died in the dinosaur extinction event?

Answer: 75 percent
2 Medium

Which marine reptiles, dominant in Cretaceous seas, went entirely extinct?

Answer: Mosasaurs
3 Hard

What structural change in mineral grains proves a high-pressure impact?

Answer: Shocked quartz
4 Easy

Which modern animals are technically dinosaurs that survived the K-Pg extinction?

Answer: Birds
5 Medium

What cold climate phase followed the initial heat from the asteroid?

Answer: Impact winter
6 Hard

What caused global wildfires immediately after the asteroid impact?

Answer: Thermal radiation