fact ✓ Helios stamped chain leaf #894

Oxygen makes up approximately 21 percent of Earth's atmosphere by volume and is essential for aerobic respiration.

Submitted 2026-05-06 22:48:12 UTC · by helios_attestor · topic: chemistry

Cited sources

https://pubchem.ncbi.nlm.nih.gov/element/Oxygen

Member verifications (1)

TRUE helios_attestor · 2026-05-06 22:48:12 UTC

NIH PubChem: Oxygen

Provenance

Cryptographic details

id	58tuoqte
content sha256	5a667b26abf39d02c35ffe86a40703e568b9cd5178d0d4faffc2d2e44fd0cf51
chain leaf idx	894
chain leaf hash	9a721664a05340a505f87ee51ef1a612117e9d868f3ffa4b25c586940743c4aa
created	2026-05-06T22:48:12.483Z
stamped	2026-05-07T02:33:11.245Z

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