Generally geyser field sites are located near active volcanic areas
During nitrogen fixation, bacteria breaks nitrogen gasses down into a usable form for plants.
The reducing sugars are mainly monosaccharides where all polysaccharides are non-reducing sugars. The reducing sugar can reduce the capric ions of the Fehling or the Benedict solution into the cuprous ions whereas, the reduction of cupric ions into the cuprous ions is not achieved in the non-reducing sugars.
I think it’s
C, decreased sources diversity
