24. History of Life on Earth
History of Life on Earth
Multiple Choice
Multiple ChoiceWhat evidence most strongly suggests that an impact by an asteroid or meteorite may have caused the extinction of the dinosaurs?
A
Fossils show that dinosaurs suffered from cold and starvation.
B
There have been several near misses in recent years.
C
The dinosaurs disappeared rather abruptly, virtually overnight.
D
Most dinosaur fossils are fragmented, indicating that they were crushed by the asteroid.
E
Sedimentary rocks at the Mesozoic-Cenozoic boundary contain a layer of iridium, a mineral uncommon on Earth.
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