According to researcher Felisa Smith of the University of New Mexico, 80–90% of large herbivores' methane emissions are released through burps rather than flatulence.
Sources
- Mammoth-Belch Deficit Caused Prehistoric Cooling? (nationalgeographic.com)
- https://blog.everythingdinosaur.com/blog/_archives/2010/06/05/4545196.html (blog.everythingdinosaur.com)
- https://ideas.ted.com/methane-isnt-just-cow-farts-its-also-cow-burps-and-other-weird-facts-you-didnt-know-about-this-potent-greenhouse-gas/ (ideas.ted.com)
- https://pmc.ncbi.nlm.nih.gov/articles/PMC10610262/figure/plants-12-03609-f002 (pmc.ncbi.nlm.nih.gov)
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