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The outer covering of which organism is ...

The outer covering of which organism is used as abrasive for metal polishing ?
(a) Dinoflagellates
(b) Radiolarians
(c) Sponges
(d) Diatoms

A

Dinoflagellates

B

Radiolarinas

C

Sponge

D

Diatoms

Text Solution

Verified by Experts

The correct Answer is:
D
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