5. What are some evolutionary
advantages of animals with
complete digestive tube?

Gap-fill exercise

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The complete digestive allows
animalsto continuously themselves
without waiting residuals to be
before beginning the
of new foods. this way the
of larger amount nutrients
is possible therefore bigger and
complex species can .
Digestive tubes with openings also
make more efficient since
provide different sites different
physical and conditions
(mouth, stomach, ) for the action
different complementary digestive
systems.