Biology, 04.02.2020 12:03 LilCookies1
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which of the following is true regarding respiration in birds?
a) it is inefficient because blood is pumped to the lungs under very low pressure.
b) it is inefficient because oxygen-poor air mixes with oxygen-rich air during inhalation.
c) it is highly efficient, as a bird’s circulatory system includes three circuits.
d) it is highly efficient, as oxygen-rich air enters the lungs even while a bird is exhaling.
Answers: 2
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For which of the following ions is the intracellular concentration typically higher than the extracellular concentration? a. sodium b. calcium c. magnesium d. potassium e. chloride
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which of the following is true regarding respiration in birds?
a) it is inefficie...
which of the following is true regarding respiration in birds?
a) it is inefficie...
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