What do all vertebrates have that invertebrates don't?\nOptions:\n- (A) sensory neurons\n- (B) fur and fat\n- (C) bones and joints\n- (D) a jaw bone\n- (E) kinetic energy\n- (F) Chemical energy\n- (G) a spinal column\n- (H) a set of gills Think carefully first, then make a decision. My thoughts:
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Vertebrates are all chordates that have a backbone. Invertebrates are animals who lack a backbone or spinal column. Vertebrates are all chordates that have a spinal column. So the answer is (G).
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