Save the Oxygen

Two Thirds of Earth's Atmospheric Oxygen is Estimated to come from the Oceans

The ocean absorbs most of the heat and a large amount of the carbon dioxide (CO2) resultant from climate change, leading to the disruption of vertical and horizontal flows of water, oxygen, carbon dioxide, salinity, and other molecules and nutrients. This happens on a global scale. Oxygen and other gases is lost more easily from warmer water into warmer air, and increased CO2 in water raises levels of carbonic acid (H2CO3), some of which dissociates into carbonate and bicarbonate and protons (charged hydrogen ions, H+) raising the acidity of the waters, thus making life more difficult, particularly for shell forming organisms.

Meanwhile, all this, and the related massive algae blooms play into the increase in 'dead zones' of waters depleted of oxygen. The sudden fallout of huge amounts of deceased organisms then uses up more oxygen and releases methane, a potent greenhouse gas, and CO2 as they decay.

It is thought of much less, since the plants, algae, diatoms, seaweeds, and other photosynthesizing organisms are net oxygen producers, but photosynthesizers ALSO require environmental oxygen to breathe (operate their metabolic structures) and live, not only CO2 and sunlight and water. So dead zones also destroy oxygen producers.

While it's hard for some people to imagine any individual or local action having a meaningful influence in mitigating climate change issues, many of the oxygen depleted dead zones are driven by anthropogenic factors locally very strongly. Namely, nutrient runoff from agriculture, aquaculture, landscaping, sewage, and likely some factors I'm forgetting. These are things we very much CAN do something about at the individual, household, business, local, state, and national levels.

NOTE: Statistics & sciences are complex and use many different data sets. Not every figure in every cited article is in exact agreement. Also note, I have not added all the relevant links I have yet.

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