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Question #69666

Coral reefs are formed by?

A Volcanic rocks
B Marine sediments
C Chlorine material precipitated from sea water
D Tiny colonial marine animals which construct limestone skeleton material
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सही उत्तर: 4

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Question #69661

The largest ocean is?

A Atlantic Ocean
B Indian Ocean
C Arctic Ocean
D Pacific Ocean
💡 व्याख्या एवं सही उत्तर (Verified Answer)

सही उत्तर: 4