Study of ancient plankton offers lasting optimism for low-oxygen seas
Ocean Oxygenation Study Image: Scanning electron microscope visualization of fossilized planktonic foraminifera. Image Credit: Anya Hess Key Discoveries Oxygen levels in the Arabian Sea were significantly higher 16 million years ago compared to present, even during a warmer global climate. Regional climate systems like monsoons, water movement, and sea pathways affect how oxygen circulates in the ocean, adding layers of complexity to future predictions. In the long-term geological future,
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