For how many years past do ocean sediment cores provide a climate record?
A)800 000.
B)2 million.
C)10 million.
D)70 million.

Name: For how many years past do ocean sediment cores provide a climate record? A)800 000. B)2 million. C)10 million. D)70 million.
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Ocean sediment cores can provide a climate record for up to 70 million years, as they accumulate slowly over time and preserve information about past climates.

For How Many Years Past Do Ocean Sediment Cores Provide