Why humans can't digest grass

1.	Why humans can't digest grass
Answer» > HUMANS can't digest GRASS because we don't have those microbes to produce the ENZYMES we'd need to break down cellulose. ... The microbes stop breaking down cellulose at a pH of 5.5 or lower, so putting them in your STOMACH wouldn't give you the ability to digest grass.

Answer»

HUMANS can't digest GRASS because we don't have those microbes to produce the ENZYMES we'd need to break down cellulose. ... The microbes stop breaking down cellulose at a pH of 5.5 or lower, so putting them in your STOMACH wouldn't give you the ability to digest grass.