0:55 minutes
Problem 8b
Textbook Question

Even though marsupial mammals give birth to live young, an eggshell forms briefly early in their development. This is evidence that a.marsupials share a common ancestor with some egg-laying species; b. marsupials are not really mammals; c. all animals arose from a common ancestor; d. marsupial mammals were separately created by God; e. the fossil record of marsupial mammals is incorrect

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