Iridium is a platinum group metal
A) found at all impact sites.
B) that is associated with all major extinctions.
C) found in small concentrations in meteorites.
D) that accumulates rapidly.
E) that is relatively common.
Correct Answer:
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Q4: Why didn't the Tunguska Event in Siberia
Q19: Bombardment of the Earth by asteroids and
Q20: Which of the following describes an asteroid?
A)
Q21: Most hypotheses to explain mass extinctions involve
A)
Q22: The Sudbury Impact Basin is famous for
Q25: The impact that created the Sudbury Basin
Q26: The K-T Boundary Mass Extinction coincides with
Q27: The Manicouagan Impact Structure
A) is a simple
Q28: The general idea that the geologic processes
Q29: Shoemaker-Levy 9 was an unusual comet in
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