Biology
Grade-10
Easy
Question
Fertile lakes or wetlands with less effective gas exchange with atmosphere have ____________________.
- High probability of oxygen depletion
- 6-7 mg/LLow probability of oxygen depletion
- High probability of water depletion
- Low probability of water depletion
Hint:
The water movement is sluggish in the wetlands.
The correct answer is: High probability of oxygen depletion
- The fertile lands or wetlands are characterized by sluggish movement of water streams
- The slow movement of water causes the oxygen to be used by the organisms thriving in it
- The sluggish water bodies are characterized by algal blooms and the oxygen level decreases in these aquatic systems
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