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Oceans may be responsible for making the Earth move in and out of ice ages every 100,000 years, finds a study.According to a paper published in the journal Geology , oceans sucking carbon dioxide (CO2) out of the atmosphere may have triggered this phenomena.

By studying the chemical make-up of tiny fossils on the ocean floor, the team discovered that there was more CO2 stored in the deep ocean during the ice age periods at regular intervals every 100,000 years.

This suggested that extra carbon dioxide was being pulled from the atmosphere and into the oceans at this time, subsequently lowering the temperature on the Earth and enabling vast ice sheets to engulf the Northern Hemisphere. — IANS

Source:The Hindu