How do birds do their respiratory-to-cardiac exchange? Options: A . &nbspCountercurrent B . &nbspCross-current C . &nbspUniform pool D . &nbspPropagation

How do birds do their respiratory-to-cardiac exchange?

Question

How do birds do their respiratory-to-cardiac exchange?

Options:

A . Countercurrent

B . Cross-current

C . Uniform pool

D . Propagation

Answer: Option B

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