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Roman55 [17]
3 years ago
8

Two characteristics used to define mammals include

Biology
2 answers:
Viktor [21]3 years ago
7 0
B. they fed their child with milk from mammary gland and their body are covered up with hair or fur not feather
Firlakuza [10]3 years ago
3 0
B. mammary glands and hair or fur. things also to classify: feed milk to young, give birth live, and breathe in air, so they have lungs.
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