The oceans are a major contributor of oxygen to the earth's atmosphere.

Name: The oceans are a major contributor of oxygen to the earth's atmosphere.
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The oceans contain a large amount of phytoplankton which produce oxygen through photosynthesis. This oxygen is then released into the atmosphere through various processes, making the oceans a significant contributor of oxygen to the earth's atmosphere.

The Oceans Are a Major Contributor of Oxygen to the Earth's