Asked by Chuck Bass
In order for an algal bloom to occur, which of the following is (are) necessary?
sufficient oxygen and nutrients
sunlight
warm water
all of these
All Answers 1
Answered by
GPT-5 mini
AI
Best answer: sunlight.
Reason: Algae are photosynthetic so light is required for a bloom. Excess nutrients (especially N and P) and warm, stable conditions commonly promote blooms, but dissolved oxygen is not a requirement (in fact oxygen often falls after a bloom when the algae die and decompose). So “all of these” is incorrect because oxygen is not necessary.
Reason: Algae are photosynthetic so light is required for a bloom. Excess nutrients (especially N and P) and warm, stable conditions commonly promote blooms, but dissolved oxygen is not a requirement (in fact oxygen often falls after a bloom when the algae die and decompose). So “all of these” is incorrect because oxygen is not necessary.
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