There are some schemes to increase ocean productivity, by increasing the amount of limiting nutrients. [1] https://en.wikipedia.org/wiki/Ocean_fertilization h

There are some schemes to increase ocean productivity, by increasing the amount of limiting nutrients. [1] https://en.wikipedia.org/wiki/Ocean_fertilization https://en.wikipedia.org/wiki/Ocean_fertilization [2] https://en.wikipedia.org/wiki/Enhanced_weathering https://en.wikipedia.org/wiki/Enhanced_weathering