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Lord Kelvin Calculated Earth Was 20-400 Million Years Old

Question 40

Multiple Choice

Lord Kelvin calculated Earth was 20-400 million years old. Why was he wrong?


A) He didn't account for the erosion of sediments.
B) He didn't account for the presence of salt deposits.
C) He wrongly assumed the oceans were initially fresh.
D) His thermometer was incorrectly calibrated.
E) He didn't know Earth had an internal heat source.

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