Answer: peristalsis
Explanation:it's the contraction and relaxation of muscles as the bolus moves down the oesophagus
Answer:
Neurulation of organogenesis is the last stage of human development. The gastrula stage forms three germ layers called ectoderm, mesoderm, and endoderm
They are the powerhouses of a cell and they act like the digestive system which takes in nutrients and breaks it down, then creates energy. Hope this helps!
;D
It will be Control. Part of the experiment used to show that the results of an experiment is really due to the conditions being tested.