An international research team speculated that the coral fossils of the Great Barrier Reef in Australia speculated that about 20,000 years ago, the coldest period of the last glacial period, the temperature of the sea was 5 degrees Celsius lower than the average temperature of the interglacial period about 10,000 years ago. The earth has a cycle of tens of thousands of years, and the glacial and interglacial periods occur repeatedly. During the glacial period, the glaciers on the earth cover a large area and the average temperature is low. During the interglacial period, the glaciers retreat and the temperature rises. The last glacial period was the last ice age of the Earth, which began about 110,000 years ago and reached its peak about 20,000 years ago. Today the Earth is in the interglacial period and has lasted for 116,000 years. According to the Japan Affairs Office on the 18th, as part of the International Integrated Ocean Drilling Program (IODP), in the spring of 2010, an international research team including Japanese researchers drilled at a depth of 40 to 170 meters near the Great Barrier Reef in northeastern Australia. Coral fossils have been mined, and the history of these fossils is about 30,000 to 9000 years ago. The group said in a paper published in the British journal Nature-Communication on the 17th that calcium is the main component of coral fossils. By analyzing the ratio of strontium to calcium in fossils, we can speculate on the temperature of seawater in the age of fossils. It was found that the temperature of seawater 20,000 years ago was 5 degrees Celsius lower than the average temperature of the last interglacial period. After the Earth entered the interglacial period, the temperature of the seawater increased rapidly, posing a severe test for the Great Barrier Reef, but they eventually adapted to the changes at the time. Suzuki, a member of the research team and the Japan Industrial Technology Research Institute, said that the current global warming process is far more than that at the time. I don't know if the Great Barrier Reef can adapt to such climate change. 15-Inch Waterproof Material Laptop Backpack 15-Inch Laptop Backpack,15-Inch Hand Withdraw Backpack,Waterproof Backpack,Laptop Backpack SUZHOU INNEST IMP.&EXP.TRADING CO.,LTD , https://www.suzhouinnest.com