Multiple Choice
What property of glacial ice helps climatologists to reconstruct the CO₂ concentrations of the atmosphere during the past?
A) The ratio of oxygen isotopes in the ice.
B) The contents of the air bubbles trapped in the ice.
C) The amount of volcanic ash frozen in the ice.
D) The amount of ¹⁶O in the water.
Correct Answer:

Verified
Correct Answer:
Verified
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