Checks out so far.

“Nitrogen-isotope measurements from tropical Atlantic sediment-core foraminifera indicate that natural nitrogen fixation was substantially lower during the warm late Pliocene and increased into the cooler Pleistocene, with Caribbean variability later tracking the roughly 41,000-year obliquity cycle.”

2 of 4 review checks done · 1 counted · 1 by the author only

Supported · 0.9561 under ledger-default@0.3.0 at snapshot 27745 · review checks 1 of 4 · provisional until audited. The number is model-conditional, not a share of truth.