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Question

A large number of fur seals and aquatic birds were found dead near a water body. The reason behind their death came out to be the failure of their temperature regulating system.
This indicates the occurrence of a/an ____________ recently.

A
Avalanche
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B
Oil spill
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C
Acid rain
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D
Flood
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Solution

The correct option is C Oil spill
Oil spill refers to accidental release of oil carrying ships etc., into marine water bodies.
It is very harmful to marine life. Since most oil floats on water surface, the creatures most affected by oil spill are heavily fumed marine mammals(e.g., fur seals) and sea birds which are affected in a similar manner. The oil coats their furs and feathers reducing their insulating ability making them more vulnerable to temperature fluctuations and less buoyant in water. This leads to their death.

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