✉news EnvironmentOceans first seen 4 d ago, last 4 d ago, peak #6
Deep ocean oxygen swung long after animals evolved
Original: Deep ocean oxygen kept rising and falling long after animals appeared
New research indicates that oxygen levels in the deep ocean continued to rise and fall dramatically long after the first animals appeared on Earth, rather than stabilising early in history. The findings challenge the assumption that ocean oxygenation settled quickly once complex life emerged, suggesting animals lived through prolonged swings in deep-sea conditions.
Why now: A new study on ocean oxygen history is attracting attention for revising scientific understanding of early animal evolution
Earth.comdeep oceanoxygenearly animals
Rank over time, top of the chart is #1. 8 snapshots from 4 d ago to 4 d ago.
Evidence
- Deep ocean oxygen kept rising and falling long after animals appeared · Earth.com
- Deep ocean oxygen kept rising and falling long after animals appeared · AOL.com
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