Question

2. Mammals and birds have four-chambered hearts and fully divided pulmonary and systemic circulations. The circulatory systems of reptiles and amphibians are sometimes presented as "inferior" because pulmonary and systemic circulations are not completely separate. What might be an advantage to incompletely separated circuits in these organisms?

Answer 1

Answer:

Explanation:

Based on the given description above regarding birds and mammals that possess four-chambered hearts with fully divided pulmonary and systemic circulations, what makes the incomplete separation of circuits in these organisms advantageous is that the distribution of the blood flow can be adjusted whether the organism is breathing through its lungs or not. Hope this helps.