Why are meteorites used to establish an age for the Earth?
A. Rocks on Earth have been recycled since the Earth was formed and are not believed to be as old as the Earth itself.
B. They are believed to be the same material from which Earth formed.
C. They are not radiogenic so they do not decay over time.
D. They are believed to be the same material from which Earth formed and rocks on Earth have been recycled since the Earth was formed and are not believed to be as old as the Earth itself.
E. All of these are correct.
Answer: D
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