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Ineedanswers23 Ineedanswers23
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6 years ago
Which of the following are unique characteristics of placental mammals?
 
  a. They have mammary glands.
  b. They are born in an embryonic state.
  c. Fetuses are full developed at birth.
  d. Infants do not need nourishment from their mother after birth.
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Svensk I.Svensk I.
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6 years ago
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Ineedanswers23 Author
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6 years ago
Thank you, thank you, thank you!
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You make an excellent tutor!
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Just got PERFECT on my quiz
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