(05.01 MC)A platypus is classed as a mammal because it has f…
(05.01 MC)A platypus is classed as a mammal because it has fur and feeds its offspring milk, yet it lays eggs, which is uncommon for mammals, but not for other vertebrates. Which of the following pieces of evidence would be most helpful in strengthening the case for continuing to classify it with the mammals?
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