Biology, 07.11.2019 19:31 destmacklin

Which are characteristics of mammals? check all that apply.

a) internal fertilization
b) three-chambered heart
c) endothermic
d) highly developed nervous system
e) several nearly hollow bones
f) always live on land

Answers: 2

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Which are characteristics of mammals? check all that apply.

a) internal fertilization <...