Solution to Ice Age ocean chemistry puzzle

Source: Science Daily

New research into the chemistry of the oceans during ice ages is helping to solve a puzzle that has engaged scientists for more than two decades. At issue is how much of the CO2 that entered the ocean during ice ages can be attributed to the ‘biological pump’, where atmospheric carbon is absorbed by phytoplankton and sequestered to the seafloor as organisms die and sink.

https://www.sciencedaily.com/releases/2019/10/191010095755.htm