✓ checked
trust me, bro:
here is the receipt.
the claim
The early atmosphere of Earth contained ammonia, methane, water vapor, and carbon dioxide, but only a trace of oxygen.
the verdict
SUPPORTED
the evidence backs this
Recorded sources
2 sources for · 0 against
Is it true that the early atmosphere of Earth contained ammonia, methane, water vapor, and carbon dioxide, but only a trace of oxygen?
Yes. Scientific literature and geochemical models generally support the traditional view that the early Earth's atmosphere was largely anoxic—containing trace oxygen—and rich in volcanic gases including carbon dioxide, water vapor, methane, and ammonia or related reduced nitrogen species.
Verdict: SUPPORTED · 2 sources for, 0 against · Last checked
Evidence for · 2
Get citation
Nishizawa, M., Saito, T., Makabe, A., Ueda, H., Saitoh, M., Shibuya, T., & Takai, K. (2021). Stable Abiotic Production of Ammonia from Nitrate in Komatiite-Hosted Hydrothermal Systems in the Hadean and Archean Oceans. doi.org. https://doi.org/10.3390/MIN11030321
See more details
More for · 1
Get citation
PB, R. & O, S. (2024). A Surface Hydrothermal Source of Nitriles and Isonitriles.. doi.org. https://doi.org/10.3390/life14040498
Receipt History
Anyone with this link can read the claim and its public receipt, including any
personal information in that text. Open permanent receipt.
Check your own claim
Challenge the receipt
Requests are recorded for review. This does not start an automatic check
or guarantee a response time.
Citation formatting by citeproc-js (Frank Bennett) and the Citation Style Language project. Source and licenses.
This receipt is an automated verdict against our published method · not an opinion about any author or publication.
Terms · Privacy · How verdicts work
Terms · Privacy · How verdicts work