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37. Wings, fins, and arms are limb adaptations that allow mammals to
a. live in different environments
b. attain diverse sizes
c. nurse their young
d. communicate with other mammals

38. Which characteristic is NOT widely adapted to allow mammals to live in different environments?
a. eyes
b. heart
c. feet
d. hair


  • Biology - ,

    38 is correct.

    What about 37?

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