109 厄尔尼诺

109. El Niño, the periodic abnormal warming of the sea surface off Peru, a phenomenon in which changes in the ocean and atmosphere combine allowing the warm water that has accumulated in the western Pacific to flow back to the east.
· A a phenomenon in which changes in the ocean and atmosphere combine allowing the warm water that has accumulated
· B a phenomenon where changes in the ocean and atmosphere are combining to allow the warm water that is accumulating
· C a phenomenon in which ocean and atmosphere changes combine and which allows the warm water that is accumulated
· D is a phenomenon in which changes in the ocean and atmosphere combine to allow the warm water that has accumulated
· E is a phenomenon where ocean and atmosphere changes are combining and allow the warm water accumulating