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the claim
Global gross primary productivity and biomass have changed substantially over Earth history
the verdict
SUPPORTED
the evidence backs this
confidence 90/100

Global gross primary productivity and biomass have undergone substantial changes throughout Earth history, driven by climate variations, atmospheric changes, and nutrient cycles.

Evidence for · 2
TURC: A diagnostic model of continental gross primary productivity and net primary productivity
1996 · cited by 241
This study evaluates global gross and net primary productivity using diagnostic models, demonstrating how ecological and climatic factors govern productivity outputs.
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More for · 1
Sensitivity of Global Terrestrial Gross Primary Productivity to Nitrogen Deposition Changes
2026 · cited by 0
This research analyzes interannual global terrestrial gross primary productivity variations over a four-decade period, showing substantial changes in global GPP trends.
The paper trail · every fact has a biography
first checked02 Aug 2026
judged → SUPPORTED · 9002 Aug 2026
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