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Biology, 04.02.2021 04:50 renaudciera

What is a defining feature of mammals that is not present in most other OA.
OB.
C
D
Mammals maintain a constant body temperature.
Mammals can produce milk for their offspring.
Mammals have a nervous system with a spinal cord.
Mammals reproduce through internal fertilization.
O

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What is a defining feature of mammals that is not present in most other OA.
OB.
C
...

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