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13 January, 13:08

A student observes an animal that has a backbone, gills, and scales. It lays eggs and is cold-blooded.

What does this animal have in common with all mammals?

Answer Options with 5 options

A. a backbone

B. gills

C. scales

D. egg-laying

E. cold-blooded

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Answers (1)
  1. 13 January, 13:28
    0
    A. a backbone

    If you think about it, us mammals (humans are mammals) don't have gills, scales, we do not lay eggs, and we are not cold-blooded. But we do have a spine, or backbone.
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