What features of the external and internal structure of amphibians are associated with their lifestyle?
| December 19, 2020 | education
Features of the external and internal structure of amphibians are associated with their lifestyle:
– external fertilization, reproduction by eggs
– the skin is covered with mucus (mucus is needed. breathing)
– two pairs of limbs
– two circles of blood circulation, three-chambered heart
– respiratory organs – lungs
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