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The impacts of large asteroids on earth are inferred to be associated with

1) Free oxygen entering Earth's atmosphere
2) Seafloor spreading
3) The creation of subduction zones
4) Global climatic changes

User Venson
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2 Answers

7 votes
The answer is: 4) global climatic changes .
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User Hans Sjunnesson
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2 votes
global climatic chages

User Arkoudinos
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