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
Answer: Option D
Solution(By Examveda Team)
Coral reefs are formed by tiny colonial marine animals which construct limestone skeleton material. Massive reef structures are formed when each individual stony coral organism or polyp secretes a skeleton of calcium carbonate.This Question Belongs to Geography >> Hydrosphere
The Marine cliffs are formed mainly due to
A. Ocean Currents
B. Structure of Shall
C. Coast of Sea
D. Depth of The Ocean
Hawaiian islands are located in ________
A. North Atlantic Ocean
B. South Atlantic Ocean
C. North Pacific Ocean
D. South Pacific Ocean
Victoria Falls in Africa are located on ________
A. River Niger
B. River Congo
C. River Zambezi
D. River Nile
The Atlantic Ocean routes are busier than the Pacific Ocean routes because Atlantic Ocean ________
A. Routes are shorter
B. Routes are not so dangerous
C. Is surrounded on both sides by industrialised nations
D. Has better shipping facilities
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