Project #67589 - Biology Questions Part 2

3-6 sentences for each question please.

1. Compare and contrast the lungs of amphibians, reptiles, and mammals.

2. Find an online diagram of the lungs of birds, explain the mechanism, and tell why it is more efficient than lungs of mammals.

3. Describe the path of an oxygen molecule as it enters and passes through the human respiratory system and body.

4. Describe what is meant by double-loop circulation. Tell why this is more efficient than circulation in a fish, for example.

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Due By (Pacific Time) 04/21/2015 12:00 am
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