Science, asked by vv6129388, 3 months ago

हार्ड कैलशियम कार्बोनेट स्ट्रक्चर आर यूज्ड स्केल्टन बाय​

Answers

Answered by kumaripuja79
2

Answer:

body wall of achinodermata is covered with spiny, hard, calcareous plates that form a rigid or flexible endoskeleton.

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