Question

multiple choice question the anomalous climatic conditions that occur on average every three to seven years and last for about a year in the tropical pacific are called an upwelling event an extreme cyclone an orographic effect el nino events

Explanation:

El Niño events are anomalous climatic conditions that occur on average every three to seven years and last for about a year in the tropical Pacific. Upwelling events involve the rising of deep - ocean water. Extreme cyclones are intense rotating storms. Orographic effects are related to the influence of mountains on weather.

Answer:

D. El Niño events