The scientists analyzed CO2 trapped inside air bubbles in ice samples from these cores representing glacial-to-interglacial transition periods that started 18,000, 135,000 and 240,000 years ago, each lasting about 10,000 years.
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these cores glacial-to-interglacial transition periods The scientists CO2
representing started analyzed trapped
glacial-to-interglacial transition periods that started 18,000, 135,000 and 240,000 years ago
18,000, 135,000 and 240,000 years ago
CO2 trapped inside air bubbles in ice samples from these cores
inside air bubbles in ice samples from these cores