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Answer:
- two chambered heart
- three chambered heart
- three chambered heart accept crocodile he has four chambered heart
- four chambered heart
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Answer:
Explanation:
Fishes - 2 chambers.
Amphibians - 3 chambers.
Reptiles - 3 chambers ( exception, crocodile - 4 chambers )
Human Beings - 4 chambers.
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