3. Compare the advantages and disadvantages of open and closed circulation.4. What is the advantage of double circulation?5. Why is it more difficult to extract oxygen from water than from air?6. In marine vertebrates, what is the main chemical removed by excretion?SAMSUNG

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3. Compare the advantages and disadvantages of open and closed circulation.

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter39: The Respiratory System

Section: Chapter Questions

Problem 2VCQ: Figure 39.13 Which of the following statements is false? In the tissues, PO2 drops as blood passes...

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3. Compare the advantages and disadvantages of open and closed circulation.
4. What is the advantage of double circulation?
5. Why is it more difficult to extract oxygen from water than from air?
6. In marine vertebrates, what is the main chemical removed by excretion?
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