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adreamer adreamer
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7 years ago
What is the most compelling piece of evidence that suggests that the dinosaurs were made extinct by the impact of an asteroid 65 million years ago?
A) a layer of sediment laid down at that time which is littered with dinosaur fossils
B) dinosaur fossils are found in rock layers older than 65 million years but not younger than 65 million years
C) a layer of sediment laid down at that time which is rich in the element Iridium (Ir), an element common in asteroids but less common on the Earth
D) the crater from this impact can still be seen in the deserts of Arizona
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Life in the Universe

Life in the Universe


Edition: 4th
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19Clyde19Clyde
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7 years ago
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adreamer Author
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7 years ago
Thanks for your help!!
jamiebonf99
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Correct Slight Smile TY
cipcal
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This site is awesome
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