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Biology, 06.12.2019 18:31 Karinaccccc

Which characteristics are shared by birds and mammals?
they have a three-chambered heart and are endothermic.
they typically give birth to live young and fertilize internally.
they reproduce sexually and typically give birth to live young.
they are endothermic and reproduce sexually.

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Which characteristics are shared by birds and mammals?
they have a three-chambered heart and...

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