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25 June, 05:24

Which two of these characteristics are examples of endoskeletons?

scales in fish

bones in mammals

calcium-rich plates in echinoderms

appendages in arthropods

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  1. 25 June, 05:28
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    Endoskeletons are bony forms on the inside of the body of an organism. In these cases, fish scales and bones on a human are inside the skin. These would be endoskeletal in nature. Echinoderms with plates and arthropods with appendages would be examples of exoskeletons.
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