Development of the third chamber in frogs

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Reference no: EM133945341

Questions

1. Adult frogs have three chambered heart, but tadpoles only have two. What selective pressures would lead to the development of the third chamber in frogs?

2. Why would birds need a fourth chamber to their heart?

3. How do you think the development of circulatory system connects to the respiratory system?

Reference no: EM133945341

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