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Biology, 06.12.2021 21:50 0Brittany0

Sammi decides to design a model to show how the digestive and circulatory systems interact. She lines a large plastic tube with a corrugated cardboard tube. Then, she connects smaller plastic tubes to the large plastic tube. These small tubes
connect
to a pump. She drills small holes in the large tube so that all of the plastic tubes connect.
She plans to run a green fluid representing food through the cardboard tube

Sammi decides to design a model to show how the digestive and circulatory systems interact. She lin

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