Which of the following is NOT a direct effect of El-Nino?

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ADistortion of equatorial atmospheric circulation

BIrregular seawater evaporation

CRise in plankton population

DReduction in fish population

Answer:

El-Nino leads to a reduction in plankton due to the warmer surface waters which limit nutrient upwelling.
This, in turn, negatively impacts fish populations that depend on plankton.

Related Questions:

Which of the following statement are correct about the occurrences of Indian Monsoon?

Himalayas and Tibetan plateaus act as physical barriers and as a source of high level heat.
Differential heating and cooling of Asian land mass and the Indian Ocean
A negative southern oscillation

Which of the following statements are correct?

Coastal areas of peninsular India experience uniform temperature throughout the year.
Thiruvananthapuram has a higher mean January temperature than June.
The Western Ghats hills experience extreme cold during winters.