Answer to Question 1
B, D, F
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Salt, MSG, baking soda, and baking powder all contain a significant amount of sodium.
Answer to Question 2
D
The mouth, stomach, small intestine, and colon describe the order in which food moves through the gastrointestinal tract. Reverse peristalsis would reverse this order. After it leaves the liver, blood does not flow to these organs in order. Hormones travel in the blood stream, not along the gastrointestinal tract.