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Kryger [21]
4 years ago
15

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

Biology
1 answer:
Dmitry_Shevchenko [17]4 years ago
8 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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