Correct Answer:

Solution : The correct answer is cools down the temperature of earth.

The "cool phase" of El Nino Southern Oscillation, La Nina, is a trend that depicts the anomalous cooling of the tropical eastern Pacific Ocean. La Nina occurrences occur when sea surface temperatures in the east-central Equatorial Pacific is below average. La Nina occurrences can last anywhere from one to three years, as opposed to El Nino, which normally lasts no more than a year.