It is where exchange of nutrient, oxygenated and unoxygenated, blood takes place​

The cardiovascular system (the heart)

Explanation: It pumps the blood the right side pumps deoxygenated blood, meanwhile the left pumps oxygenated blood

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the correct answer is: d. the saltine and pretzel are made of flour, yeast, and baking soda, and salt. the pecan contains no flour but it does contain fats. the pecan is a nut that can be consumed as a healthy snack. first of all, pecans are a source of fat (monounsaturated fat), but they provide less fat than some other nuts. pecans are a rich source of dietary fiber, manganese magnesium, phosphorus, thiamin, vitamin e…