The main distinguishing feature of vertebrates is their vertebral column, or backbone (see Figure below). The backbone runs from the head to the tail along the dorsal (top) side of the body.
CK-12 (High School)
RST.8 - Evaluate Claim/Hypothesis, RST.4 - Key Terms, RST.2 - Main Ideas
DEPTH OF KNOWLEDGE (DOK) LEVELS:
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