a carbon dioxide for photosynthesis after they've bloomed the microorganisms sink down into the deep sea disposing of the c o two they've incorporated. nutrients used for fertilization could be dispersed around the world by a major ocean currents that would increase plumes of phytoplankton and algae. but here too the potential for c o two capture ten percent at most and what effect it would have on the ecosystem is unclear and possibly risky. perience with climate engineering has been gathered on land as well in switzerland giant pump that silla these have been sucking c o two. ackley out of the air it's then either used as a fertilizer in giant greenhouse plantations or at sec western underground is this a viable model. do you see as far as a whopping c o two pumps can contribute but they'd have to be scaled up enormously we'd need lots of them and lots of space for the c.e.o.