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At least half of the oxygen produced on Earth comes from the ocean, mostly from tiny photosynthesizing plankton. But marine life also uses roughly the same amount of oxygen to breathe, for cellular respiration, and in the decomposition process.
- Satellite Imagery
Satellites also provide information about the color of the...
- Satellite Imagery
Aug 12, 2021 · This oxygen is derived from photosynthesis – the process by which plants turn carbon dioxide and water into organic matter and oxygen. Oxygen has been relatively stable at a high level for the...
May 4, 2023 · They are so tiny that there could be thousands of them in just one droplet of water. Residing in oceans and lakes, they capture sunlight and turn it into chemical energy via photosynthesis, and, just like trees, they make oxygen by consuming carbon dioxide and releasing oxygen.
- Kat De Naoum
Jun 24, 2020 · Scientists estimate that 50-80% of the oxygen production on Earth comes from the ocean. The majority of this production is from oceanic plankton – drifting plants, algae, and some bacteria...
- The Archean Earth
- The Experiment
- Creating Oxygen from Water?
The Archean eon represents one third of our planet’s history, from 2.5 billion years ago to four billion years ago. This alien Earth was a water-world, covered in green oceans, shrouded in a methane hazeand completely lacking multi-cellular life. Another alien aspect of this world was the nature of its tectonic activity. On modern Earth, the domina...
We collected samples of 2750- to 2670-million-year-old granitoid rocks from across the Abitibi-Wawa subprovince of the Superior Province — the largest preserved Archean continent stretching over 2000 km from Winnipeg, Manitoba to far-eastern Quebec. This allowed us to investigate the level of oxidation of magmas generated across the Neoarchean era....
We found that the magma sulfur content, which was initially around zero, increased to 2000 parts per million around 2705 million years. This indicated the magmas had become more sulfur-rich. Additionally, the predominance of S6+ — a type of sulfer ion — in the apatite suggested that the sulfur was from an oxidized source, matching the data from the...
We now know that more than half the planet’s oxygen comes from the ocean. Not the entire ocean—just the top 200 meters (656 feet) or so. That’s about as far as sunlight can travel through water to power photosynthesis. In this photic zone we find all kinds of photosynthetic organisms.
May 11, 2023 · But where did that water come from? One theory is that Earth was born with the elemental precursors of water locked in its rocks. A second possibility is that water-rich asteroids bombarded Earth, bringing water here.
