I just don’t see how 5 million barrels pouring into the water doesn’t change the ratio.
I’m not trying to argue with you...but I just don’t see how it could be true.
A partial answer is that oil extraction suppresses natural seepage for miles around.
5 mil. barrels is only 5 tankers of oil. Like a drop in a swimming pool.
It doesn’t change the ratio because it is minute compared to the other sources of oil in the waterways. The Ixtoc 1 well blowout was included in the figures that went into that chart and it released far more oil than the Deepwater Horizon blowout.