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Importance of Water

The decrease ...

Question

The decrease in the ___________ content of water leads to the death of aquatic life.

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Solution

Dissolved oxygen is an important factor that determines the quality of water in lakes and rivers.
When the dissolved oxygen levels drop too low, many aquatic species die. If the oxygen level drops to zero, the water will become septic.

So, the correct answer is oxygen.

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Importance of Water

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