While the low marine arsenic concentrations again coincide with a rapid rise in atmospheric oxygen content to near modern day levels at this time, the subsequent increase when the ice melted is not accompanied by atmospheric oxygen decline. (sciencedaily.com)
Even smaller oxygen declines can stunt growth in animals, hinder reproduction and lead to disease or even death. (constantinealexander.net)
«Halting climate change requires a global effort, but even local actions can help with nutrient - driven oxygen decline.» (globalpossibilities.org)