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Which class belong a sirens to?

Birds

Mammals

Amphibians

Reptiles

Sirenidae, the sirens, are a family of aquatic salamanders (amphibians). Family members have very small fore limbs and lack hind limbs altogether. In one species, the skeleton in their fore limbs is made of only cartilage. Sirens are found only in the Southeastern United States and northern Mexico.

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Answers by country

the United States

0%

3%

86%

9%

76

India

5%

8%

66%

19%

56

Greece

8%

16%

58%

16%

12

Germany

20%

12%

51%

15%

39

Poland

13%

27%

49%

9%

1744

Australia

0%

9%

45%

45%

11

the United Kingdom

19%

13%

44%

22%

36

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They have a large oxygen supply from the start

Oxygen is created during protein reduction

Oxygen comes in through pores in the shell

They don't need oxygen at all

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