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nadezda [96]
3 years ago
5

What initial observation led to the Alvarez asteroid-impact theory? a large undersea crater off the coast of the Yucatan Peninsu

la in Mexico high iridium levels in a 66-million-year-old clay layer in Denmark and Italy large concentrations of shock-fractured quartz in rock layers found in Europe dinosaur remains found near a large crater formed by an asteroid impact
Chemistry
2 answers:
Naddik [55]3 years ago
8 0

Answer:

The answer is high iridium levels in a 66-million-year-old clay layer in Denmark and Italy so basically B

Explanation:

I just did the assessment on edg let me know how you did!!!!!!

Nikitich [7]3 years ago
6 0

Answer: high iridium levels in a 66- million-year-old clay layer in Denmark and Italy

Explanation:

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