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Oxygen Concentration Higher Surface Water Air Close Seabed

The oxygen concentration is higher in surface waters due to the mixing of air and water, and the presence of plants/seaweeds producing oxygen through photosynthesis.

A concentração de oxigênio é maior nas águas superficiais devido à mistura de ar e água, e à presença de plantas/algas que produzem oxigênio por fotossíntese.

Front The concentration of oxygen is higher in the surface waters than it is in the water close to the seabed. Suggest why. (2 marks)
Back Mixing of air and water (at surface);
Air has higher concentration of oxygen than water;
Diffusion into water;
Plants / seaweeds near surface / in light;
Produce oxygen by photosynthesis;

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