Question

What is the major source of pure oxygen in the biosphere?​

Answer 1

Answer:

The major source for oxygen on earth is Ocean. Nearly more than 50% of the oxygen comes from ocean. Most of Earth's oxygen comes from tiny ocean plants – called phytoplankton – that live near the water's surface and drift with the currents. Phytoplankton produce oxygen through photosynthesis.

Answer 2

Answer:

The major source for oxygen on earth is Ocean. Nearly more than 50% of the oxygen comes from ocean. Most of Earth's oxygen comes from tiny ocean plants – called phytoplankton – that live near the water's surface and drift with the currents. Phytoplankton produce oxygen through photosynthesis

Explanation:

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