The scientists analyzed CO 2 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.
(The scientists; analyzed; CO 2) (CO 2; trapped; inside air bubbles in ice samples from these cores) (these cores; representing; glacial-to-interglacial transition periods that started 18,000, 135,000 and 240,000 years ago) (glacial-to-interglacial transition periods; started; 18,000, 135,000 and 240,000 years ago)
The scientists CO 2 these cores glacial-to-interglacial transition periods
analyzed trapped representing started
CO 2
inside air bubbles in ice samples from these cores
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