Sagot :
Answer:
1.all vertebrates have backbones.
2.mammals differ from reptiles,aphibians,birds,and fish because mammals are warm blooded animals that are born alive.
3.reptiles and aphibians are both cold blooded animals and they differ in their skin.Reptiles have dry scaly skin and have some shells while aphibians have moist and scaleless skin.
Explanation:
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