Biology, 26.02.2021 23:30 tinacalderon2856

PLEASE HELP QUICKLY! Which characteristic is common to all three groups of mammals?

A. They require little or no parental care.

B. They develop partially or fully inside the mother's body.

C. They have long gestation periods.

D. They are always endotherms.

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PLEASE HELP QUICKLY! Which characteristic is common to all three groups of mammals?

A....