The answer is - 30.
In the last 800,000 years, in a span of 1,000 years it never happened that the CO2 go upwards or downwards for more than 30 ppm. It has always been a slow process in this period and as much as the jumps were big, that never surpassed this number. On the other hand we are witnessing that this has happened nowadays in just 13 years, and that is very concerning because such rapid changes of CO2 in the atmosphere brings rapid changes in the climate and it will be a global catastrophe if this trend continues.
This would would have to be sea food, specifically fish.
True.
The word Mesopotamia means between the rivers. Mesopotamia is nestled between the Tigris and Euphrates Rivers and forms the eastern half of the Fertile Crescent. Early civilisations showed up about six thousand years ago.