Question : EI-Nino is a complex weather system that appears once every three to ______ years, bringing drought, floods and other weather extremes to different parts of the world.
Option 1: seven
Option 2: nine
Option 3: four
Option 4: six
Correct Answer: seven
Solution : The correct option is seven.
El Nino is a climate phenomenon that typically occurs every two to seven years, although the average frequency is approximately every three to five years. It can lead to various weather extremes, including droughts, floods, and other disruptions in different regions around the globe.
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