Question

what is source of o2​

Answer 1

Answer:-

Most of the oxygen cones from tiny ocean plants - called phytoplankton - that live near the water's surface and drift with currents. Like all plant, they photosynthesize - that is, they use

sunlight and carbon dioxide to make food. A by-product of photosynthesis is oxygen.

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Answer 2

Most of this oxygen comes from tiny ocean plants – called phytoplankton – that live near the water's surface and drift with the currents. Like all plants, they photosynthesize – that is, they use sunlight and carbon dioxide to make food. A byproduct of photosynthesis is oxygen.

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