Biology, 06.05.2020 01:57, backyardmastrs

The Class Mammalia includes all living species with hair and mammary glands plus related fossil species; it is a complete group containing all of the descendants of a common ancestor that also had these characteristics. Therefore the Class Mammalia is a .

a) genus
b) clade
c) population
d) species

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The Class Mammalia includes all living species with hair and mammary glands plus related fossil spec...