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Uses of Water

Aquatic creat...

Question

Aquatic creatures use dissolved ______ for respiration.

A

chlorine

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B

nitrogen

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C

hydrogen

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D

oxygen

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Solution

The correct option is D oxygen
Water contains non bonded oxygen molecules which are called dissolved oxygen. Fishes obtain oxygen for respiration through gills. Plants require oxygen if light is not available for photosynthesis. Even if the level of dissolved oxygen is either high or low, can harm the aquatic life.

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