Major Extinctions of Dinosaurs Are Associated with Large Meteor Impacts

question 8

Multiple Choice

Major extinctions of dinosaurs are associated with large meteor impacts, including the final extinction that wiped them out at the Cretaceous-Tertiary boundary.The particulate matter that would have arisen as a result of impact would have entered the atmosphere and had secondary impacts.Some scientists believe that a fundamental difference between mammals and dinosaurs allowed mammals to survive this event, but doomed the dinosaurs.What may have characterized the last generation of dinosaurs as they went extinct?

• A)Lungs clogged with dust.
• B)Highly skewed sex ratios.
• C)Hormonal disruptions due to contaminated water.
• D)Weak eggshells due to radiation.

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