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22 February, 07:18

Which two of these characteristics are examples of endoskeletons?

A. scales in fish

B. bones in mammals

C. calcium-rich plates in echinoderms

D. appendages in arthropods

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Answers (1)
  1. 22 February, 09:14
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    I believe it is C) calcium-rich plates echinoderms and B) bones in mammals like vertebral
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