because oxygen in the global ocean is not evenly distributed, the 2 percent overall decline means there is a much larger decline in some areas of the ocean than others.
because oxygen in the global ocean is not evenly distributed, the 2 percent overall decline means there is a much larger decline in some areas of the ocean than others.
ozone depletion:53
the greatest arctic declines are in the winter and spring, reaching up to 30 percent when the stratosphere is coldest.