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The Bird
They help the digestive systems and help digest any food
not for long because an animal neds the digestive system to provide essential amino acids and essential vitamins and minearals which said animal could not live without
Parasites such as tapeworm, planarian and live fluke have digestive systems that are saclike. Their digestive tracts have one opening and they live inside a host animal.
fungi
fungi
They help the digestive systems and help digest any food
WHAT IS THE BIGEST WHALE ON Earth or even the biggest animal on earth i think the blue whale is
Unlike other animal that eat grain, pigs do not founder. They have very hearty digestive systems and rarely overeat.
Because - just like any other animal - their bodies need to convert the food they eat into energy !
The organ systems include: Cardiovascular, lymphatic, digestive, integumentary, musculoskeletal, respiratory, urogenital, nervous, endocrine, organs of special systems (allows the animal to interact with its environment; sight, taste, smell and hearing) and the hematopoietic system.