A) Tundra
B) Crater
C) Ice bug
D) Vents
Correct Answer: D
Solution :
Vents are hot water springs in the deep ocean formed by underwater volcanic activities here coelenterates, wroom, clams and crabs live in total darkness and total absence of plant. The water is rich in salts and \[{{H}_{2}}S\]. When the water mixes with \[{{O}_{2}}\] rich ocean water, \[{{H}_{2}}S\] is oxidized to release energy. The bacteria use this energy. Filter feeder clams feeds on bacteria and crabs live on these filter feeder. Thus a food chain starting from bacteria is established using chemical energy, intend of sunlight.
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