The provenance experiment on Eucalyptus smithii shows that height, DBH, volume have little variation in provenance, and great variation in individuals.

史密斯桉种源试验结果表明：树高、胸径、材积种源间变异相对较小，而种源内个体间的变异较为丰富。

youdao

M. smithii harvests hydrogen molecules from neighboring microbes in the gut, which it then transforms into methane gas.

CNN: Can you smell obesity?

It's that smaller group of individuals who might be genetically predisposed to harboring levels of M. smithii that might put them at higher risk of developing obesity.

CNN: Can you smell obesity?

The culprit, she believes, is a member of archaea known as Methanobrevibacter smithii, which is present in the intestinal tract of about 70% of people, but elevated in about 30%.

CNN: Can you smell obesity?