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Biology, 19.12.2019 10:31 emoreader3122
The diagram below shows a particle of food being moved along the human digestive tract by alternative waves of relaxation and contraction of the muscular walls of the esophagus. which process causes the movement of the food down the esophagus?
question 2 options:
circulation
active transport
peristalsis
osmosis
2. the diagram below represents a group of organs in the human body. urine leaves the urinary bladder by passing through structure:
a
b
c
d
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