HELP INDEX NEXT UP PREVIOUS FEEDBACK ATG Vertebrate Features
Members of the subphylum vertebrate are unique as they have an internal skeleton which often consists of both cartilage and bone. The skeleton provides support as vertebrates grow, thus allowing for their large size. Secondly, a skeleton provides protection of both the brain and delicate sense organs. Theory suggest that this has enabled the evolution of intelligence. [BM] {EB}
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