A sudden algal bloom after gradual nutrient increase in a lake is an example of what?
Answer and explanation
Correct answer: Environmental threshold
Nutrients such as nitrogen and phosphorus may accumulate gradually without an obvious immediate change. Once their concentration crosses a critical level, algae can multiply rapidly, reduce water clarity and lower oxygen as they decompose. The sudden shift after gradual pressure indicates a threshold and nonlinear response. It is not complete stability, a resource surplus or environmental determinism.
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What is the correct answer to this question?
Environmental threshold
Why is this the correct answer?
Nutrients such as nitrogen and phosphorus may accumulate gradually without an obvious immediate change. Once their concentration crosses a critical level, algae can multiply rapidly, reduce water clarity and lower oxygen as they decompose. The sudden shift after gradual pressure indicates a threshold and nonlinear response. It is not complete stability, a resource surplus or environmental determinism.
Which subject and chapter does this question cover?
This is a Class 11 Geography question. Chapter: Geography as a Discipline. Topic: Geography as an integrating discipline.
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