Page 28 - SCIENCE
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              SCIENCE  AND  ENVIRONMENT                                1st  Grade  -  Primary  Education








                                         The  digestive  system




              Color.
                                                                                             food  is  ground


                                                                                             in  the  mouth,
                                                                                             with  teeth  and
                                                                                             They  mix  with  saliva.


                                   They  pass  through
                                   the  esophagus











                                                                                        In  the  stomach
                                                                                        they  mix
                                                                                        with  gastric  juices.










                               They  then  pass  into
                               the  intestines.
                                                                 There  what  is  used  for
                                                                  feed  us  is  going
                                                                  to  the  blood





                                                           The  bad  will  be  removed
                                                           through  the  anus  in  the
                                                           form  of  feces.
















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