Anonym Anonym
  • 08-04-2014
  • Biology
Answered

Traits of vertebrates include
a. an endoskeleton made of bone or cartilage.
b. an excretory system that includes a pair of kidneys.
c. a system of muscles that enable movement.
d. all of the above

Answer :

AW3 AW3
  • 08-04-2014
The answer is d. all of the above.
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