Answer:
B) warmer-than-average surface temperature of water in the eastern tropical Pacific Ocean
and
D)a phenomenon that takes place every 2 to 7 years
Explanation:
El Nino is the name for the climate phenomenon during which seawater surface temperature rises to the level of normal for a few months. This happens in the part of the Pacific Ocean whose name is the El Nino-Southern Oscillation, which includes the Pacific coast of South America.
This can last from 9 to 12 months, but sometimes it goes on for more than a year. The phenomenon has been happening for more than a thousand years.
The average time for El Nino to occur is around 4 years, but it varies anywhere between 2 or 7 years.
This occurrence affects weather patterns, and with this, it also affects fishing and agriculture, mostly around the near countries, but sometimes it is felt even wider.
