The correct answer is option (A) the running water will sweep the algae downstream and keeps it from growing.
What is algal bloom?
- The rapid increase in production of algae in freshwater and marine water system is called algal bloom.
- It is also known as the discoloration of water from the algal pigment.
What causes algal bloom?
- Excessive nitrogen and phosphorus cause overgrowth of algae.
- The overgrowth of algae consumes oxygen and blocks sunlight from underwater plants.
- When the algae eventually dies, the oxygen in the water is consumed.
As the river and streams are always flowing it will sweep the algae which will prevent it from growing further.
learn more about rivers and streams below,
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