Answers

2015-11-29T21:44:05+08:00

I think human, whale and bat aren't belong to a common ancestral group, because humans are 2 legged creature, while the whale is a water creature, while bats are winged creatures.

Although there's one characteristics that all humans, whales, and bats are in common, that is they're all considered as MAMMALS which means they all feed their young through their mammary glands.

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