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Oxygen in seawater.

If all oxygen in seawater comes either from exchange with the atmosphere or from photosynthesis by phytoplankton in the euphotic zone, how do you explain that there is sufficient dissolved oxygen throughout the water column, even in the greatest depths, except in highly unusual locations? how did photosynthesis allow life to come out of the ocean and on to land?

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Hello and thank you for the opportunity to assist you with this question. You also add a second partial question - a very short answer to that is also provided. If there is more to that question, please resubmit the question to the board as a new question. Thank you! -

1) If all oxygen in seawater comes either from exchange with the atmosphere or from photosynthesis by phytoplankton in the euphotic zone, how do you explain that there is sufficient dissolved oxygen throughout the water column, even in the greatest depths, except in highly unusual locations?

The distribution of oxygen throughout the ocean water column is a function of ocean biogeochemistry. The oxygen content at the surface is relatively high (about 6 milliliters per liter) and is ...

Solution Summary

Oxygen in seawater is examined. How photosynthesis allows life to come out of the ocean and on to the land is determined.

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