52. What is meant by
“mutualist exploration of
cellulose digestion”, a
phenomenon that occurs in
some mammals and insects?

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Herbivorous animals eat amounts
of cellulose, substance not digested
their digestive enzymes. these
animals regions the digestive tube
colonized by micro-organisms
digest cellulose. This
ecological interaction between
and micro-organisms occurs, .g., in
horses, cows, and in some
such as termites.