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With the exception of crocodilians, reptiles and amphibians have only two chambers in their hearts: two atria and a single ventricle. The single ventricle allows oxygenated blood to mix with deoxygenated blood.
Double-Jointed Kid
no they have double loop circulatory system but the difference is that they have single ventricle.
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double touch method is better
no a double bar graph is better
their circulatory system is tottaly different from each other as fishes have sinple circulatory system and consists of single auricle and ventricle while all amphibians have double circulatory system and have 3 chambers of heart (one ventricle and two atrium).
I think is double din.
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it is somewhat better
Yes, the heart is a two part pump. The right side of the heart receives deoxygenated blood from the body and pumps it to the lungs. The left side of the heart receives oxygenated blood from the lungs and pumps it to the body.
Double bubble!