This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
La Niña happens when there is a warmer sea surface temperature in the Southern Pacific Ocean. It is primarily caused by the build-up of cooler waters in the Pacific. Several places may experience extreme cold and rainy season unlike El Niño when there is extreme heat.