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44 votes
44 votes
What characteristics are used to
classify mammals into each of their groups?

User Zmbq
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2 Answers

21 votes
21 votes
The main difference between mammals and other vertebrates are three characteristics: hair, milk production in mammary glands, and three bones in the inner ear. Extant mammals are divided into three subclasses based on reproductive techniques
User GirkovArpa
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18 votes
18 votes

Answer:

The way they feed

The way they develop

User Boaz Yaniv
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